Verification work 1 kinematics option.

19.04.2020

Forms and means of control

Structural element work program "Forms and means of control" includes a system of control materials (control and laboratory work) to assess the development of the planned content by schoolchildren. Texts of control works are attached, laboratory works are in the textbook of physics on page 269.

Examination No. 1 on the topic

Option 1

Level A

1. The movement of an elephant and a fly is being investigated. Model material point can be used to describe movement

1) only an elephant; 2) only flies; 3) both elephant and fly in different studies;

4) neither an elephant nor a fly, since these are living beings.

2. Mi-8 helicopter reaches 250 km/h. How long does it take him to fly between two settlements located at a distance of 100 km?

1) 0.25 s; 2) 0.4 s; 3) 2.5 s;s.

3. The figures show graphs of coordinates versus time for four bodies moving along the OX axis. Which of the bodies moves with the greatest modulo speed?

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1) 0.05 s; 2) 2 s; 3) 5 s; s.

5. The skier drove down the hill in 6 s, moving with a constant acceleration of 0.5 m / s². Determine the length of the slide if it is known that at the beginning of the descent the speed of the skier was 18 km/h.

1) 39 m; m; m; m.

6. The motor boat moves along the river at a speed of 5 m / s relative to the shore, and in standing water– at a speed of 3 m/s. What is the speed of the river current?

1) 1 m/s; 2) 1.5 m/s; 3) 2 m/s; 4) 3.5 m/s.

Level B

7. Establish a correspondence between physical quantities and the formulas by which these quantities are determined.

to the table

PHYSICAL QUANTITIES FORMULA

A) Acceleration 1);

B) Speed at uniform 2) ;

rectilinear motion 3) t;

C) Projection of displacement at 4) ;

uniformly accelerated rectilinear 5) .

movement.

Level C

8. On the path of 60 m, the speed of the body decreased by 3 times in 20 s. Determine the speed of the body at the end of the path, assuming that the acceleration is constant.

9. From settlements A and B, located along the highway at a distance of 3 km from each other, a cyclist and a pedestrian started moving in the same direction at the same time. A cyclist is moving from point A at a speed of 15 km/h, and a pedestrian is moving at a speed of 5 km/h. Determine how far from point A the cyclist will overtake the pedestrian.

Option 2

Level A

1. Two bodies thrown vertically upward from the surface reached heights of 10 m and 20 m and fell to the ground. The paths traveled by these bodies differ by

1) 5 m; m; m; m.

2. In 6 minutes uniform motion The motorcyclist traveled 3.6 km. The motorcyclist's speed is

1) 0.6 m/s;m/s;m/s;m/s.

3. The figures show graphs of the dependence of the displacement projection on time for four bodies. Which of their bodies moves with the greatest modulo speed?

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4. While climbing uphill, the speed of a cyclist moving in a straight line and uniformly accelerated changed in 8 s from 18 km/h to 10.8 km/h. In this case, the acceleration of the cyclist was

1) -0.25 m/s²; 2) 0.25 m/s²; 3) -0.9 m/s²; 4) 0.9 m/s²;

5. Emergency braking of the car took place within 4 s. Determine what was the braking distance if the initial speed of the car is 90 km/h.

1) 22.5 m; m; m; m.

6. A swimmer floats down the river. Determine the swimmer's speed relative to the shore if the swimmer's speed relative to the water is 0.4 m/s and the speed of the river is 0.3 m/s.

1)0.5 m/s; 2) 0.1 m/s; 3) 0.5 m/s; 4) 0.7 m/s.

Level B

7. Establish a correspondence between physical quantities and their units of measurement in SI.

For each position in the first column, select the corresponding position in the second and write down to the table selected numbers under the corresponding letters.

PHYSICAL MEASUREMENTS SI UNITS

A) speed 1) min

B) acceleration 2) km/h

B) time 3) m/s

Level C

8. The train starts uniformly accelerated movement from a state of rest and passes 7 m in the fourth second. What distance will the body cover in the first 10 s?

9. The boat, crossing a river 800 m wide, moved perpendicular to the river at a speed of 4 m / s in a reference frame associated with water. How much will the boat be carried by the current if the speed of the river is 1.5 m/s?

Test No. 2 on the topic

"Fundamentals of Dynamics"

Option 1

Level A

1. The statement that a material point is at rest or moves uniformly and rectilinearly if no other bodies act on it or the action of other bodies on it is mutually balanced,

1) true under any conditions;

2) true in inertial frames of reference

3) true for non-inertial frames of reference

4) incorrect in any reference systems

2. Having descended from the hill, the sled with the boy slows down with an acceleration of 2 m / s2 Determine the value of the braking force if the total mass of the boy and the sled is 45 kg.

1) 22.5 HHHH

3. The earth attracts a thrown ball with a force of 3 N. With what force does this ball attract the Earth to itself?

1) 0.3 N 2) 3 N 3) 6 N 4) 0 N

4. The force of gravity between two bodies will increase by 2 times if the mass

1) increase each of the bodies by 2 times

2) reduce each of the bodies by 2 times

3) increase one of the bodies by 2 times

4) reduce one of the bodies by 2 times

5. The left figure shows the velocity and acceleration vectors of the body. Which of the four vectors in the right figure indicates the direction of the body's momentum?

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B) Newton's second law 2) F=kx

C) Newton's third law 3)

Level C

8.K motionless body with a mass of 20 kg, a constant force of 60 N was applied. What distance will this body cover in 12 s?

9. The radius of the planet Mars is 0.5 of the radius of the Earth, and the mass is 0.12 of the mass of the Earth. Knowing the acceleration of free fall on Earth, find the acceleration of free fall on Mars. "Acceleration of free fall on the Earth's surface is 10 m/s2.

Option 2

Level A

1. The reference system is connected to the vehicle. It is inertial if the car

1) moves evenly along a straight section of the highway

2) accelerates along a straight section of the highway

3) moves evenly on a winding road

4) by inertia rolls up the mountain

2. Which of the quantities (speed, force, acceleration, displacement) at mechanical movement always coincide in direction?

1) Force and acceleration

2) Strength and speed

3) Force and displacement

4) Acceleration and movement

3. The mass of the Moon is 81 times less than the mass of the Earth. Find the ratio of the gravitational force acting on the Moon from the side of the Earth and the gravitational force acting on the Earth from the side of the Moon.

4. With a 3-fold increase in the distance between the centers of spherical bodies, the force of gravitational attraction

1) increases by 3 times 3) increases by 9 times

2) decreases by 3 times 4) decreases by 9 times

5. Find the momentum of a car with a mass of 1.5 tons moving at a speed of 36 km/h.

1)15 kg. m/s 2)54 kg. m/skg. m/skg. m/s

6. Two inelastic balls with masses of 6 kg and 4 kg move towards each other with speeds of 8 m/s and 3 m/s, respectively, directed along one straight line. How fast will they move after a perfectly inelastic collision?

7. Establish a correspondence between the types of movement and their main properties. For each position of the first column, select the corresponding position of the second and write down the selected numbers in the table under the corresponding letters.

TYPES OF MOVEMENT		BASIC PROPERTIES
	Free fall		Occurs due to separation from the body at a certain speed
	Movement along		any part of it
	circles with		Movement under the influence of gravity alone
	modulo constant		A movement in which the acceleration at any instant of time
	speed		directed towards the center of the circle.
	Jet propulsion		Movement occurs in two mutually opposite
			directions.
			Movement at a constant speed.

Level C

8. A car with a mass of 3 tons, moving from a state of rest along a horizontal path, after 10 s reaches a speed of 30 m / s. Determine the thrust force of the engine. Ignore the resistance to movement.

9. The mass of the Moon is 80 times less than the mass of the Earth, and its radius is 3.6 times less than the radius of the Earth. Determine the free fall acceleration on the moon. The free fall acceleration on the Earth is 10 m/s2.

Test No. 3 on the topic

“Mechanical oscillations and waves. Sound".

Option 1

Level A

1. When measuring a person's pulse, it was recorded 75 blood pulsations in 1 minute. Determine the period of contraction of the heart muscle.

2. Amplitude free vibrations body is 3 cm. What is the distance traveled by this body in 1/2 period of oscillation?

1) 3 cm 3) 9 cm

3. The figure shows the dependence of the coordinate of the center of a ball suspended on a spring from time. Determine the amplitude of oscillations.

4. A wave with a frequency of 4 Hz propagates along the cord at a speed of 8 m/s. The wavelength is

1) 0.5 m 2) 2 mm 4) not enough data to solve

5. What changes does a person notice in sound with an increase in the amplitude of oscillations in a sound wave?

1) pitch up 2) pitch down

2) volume up 4) volume down

6. The hunter fired, being at a distance of 170 m from the forest. How long after the shot will the hunter hear the echo? The speed of sound in air is 340 m/s.

1) 0.5 s 2) 1 s 3) 2 s 4) 4 s

Level B

7. Establish a correspondence between physical phenomena and their names.

For each position in the first column, select the corresponding position in the second and write down to the table selected numbers under the corresponding letters.

Level C

8. A body weighing 600 g is suspended from a chain of two parallel springs with stiffness coefficients of 500 N/m and 250 N/m. Determine the period of natural oscillations of the system.

9. With what speed does the weight of the spring pendulum pass the equilibrium position if the spring stiffness is 400 N/m and the oscillation amplitude is 2 cm? The weight of the load is 1 kg.

Option 2

Level A

1. When measuring a person's pulse, 75 blood pulsations were recorded in 1 minute. Determine the frequency of contraction of the heart muscle.

2. The amplitude of free oscillations of the body is 50 cm. What distance did this body travel in 1/4 of the oscillation period?

3. The figure shows the dependence of the coordinate of the center of a ball suspended on a spring from time.

X, cm

The oscillation period is

1) 2 s 2) 4 s 3) 6 ss

4. Mandatory conditions for the excitation of a mechanical wave are

A: the presence of a source of oscillation

B: the presence of an elastic medium

B: the presence of a gaseous environment

1) A and C 3) A and B

2) B and C 4) A, B and C

5. The tuning fork emits a sound wave 0.5 m long. The speed of sound is 340 m/s. What is the frequency of the tuning fork?

1) 680HzHzHz

6. The echo caused by a weapon shot reached the shooter 2 s after the shot. Determine the distance to the obstacle from which the reflection occurred if the speed of sound in air is 340 m/s.

7. Establish a correspondence between physical quantities and the formulas by which these quantities are determined.

For each position in the first column, select the corresponding position in the second and write down to the table selected numbers under the corresponding letters.

PHYSICAL VALUES FORMULA

A) Oscillation period 1)

B) Wavelength 2)

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Level C

8. On some planet, the period of oscillation of a second earth mathematical pendulum turned out to be 2 s. Determine the free fall acceleration on this planet.

9. The figure shows a graph of the change over time in the kinetic energy of a child swinging on a swing. Determine the potential energy of the swing at the moment corresponding to point A on the graph.

Test No. 4 on the topic

"Electromagnetic field".

Option 1

1. A square frame is placed in a uniform magnetic field, as shown in the figure. The direction of the current in the frame is indicated by arrows.

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The force acting on the bottom side of the frame is directed

1) down 2) up 3) out of the plane of the sheet on us

4) in the plane of the sheet away from us

2. A straight conductor was placed in a uniform magnetic field perpendicular to the lines of magnetic induction, through which a current of 8 A flows.

Determine the induction of this field if it acts with a force of 0.02 N for every 5 cm of the conductor length.

1) 0.05 T 2) 0.0005 T T 4) 0.0125 T

3. Once the ring falls on a vertical bar magnet so that it is put on it; the second time so that flies past him. The plane of the ring in both cases is horizontal.

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The current in the ring occurs

1) in both cases 2) in none of the cases

1) only in the first case 4) only in the second case

4. The radio station operates at a frequency of 60 MHz. Find the length electromagnetic waves emitted by the antenna of the radio station. Velocity of propagation of electromagnetic waves With= m/s.

1) 0.5 m 2) 5 m 3) 6 mm

5. How will the electric capacitance of a flat capacitor change if the area of the plates is increased by 3 times?

1) Will not change

2) will increase by 3 times

3) Decrease by 3 times

1) Decrease by 9 times

2) Will increase by 9 times

3) Decrease by 3 times

4) will increase by 3 times

7. Establish a correspondence between scientific discoveries and the scientists to whom these discoveries belong.

For each position of the first column, select the corresponding position of the second and write down the selected numbers in the table under the corresponding letters.

Level C

8. If a beam of light is sent to the bottom of a thin-walled vessel filled with liquid and having the shape shown in the figure so that, having passed through the liquid, it hits the center of the vessel, then the beam exits the liquid at an angle of 300 relative to the water surface. What is the index of refraction n liquid, if the beam JSC is 450 with the vertical?

9. The detector completely absorbs the light incident on it with a frequency v= 6∙1014 Hz. During t= 5 s falls on the detector N= 3∙105 photons. What is the power absorbed by the detector? Planck's constant 6.6∙10-34 J. s.

Option 2

Level A

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At the same time, the inductive current

1) flows only in the first ring

2) flows only in the second ring

3) flows in both the first and second rings

4) does not flow in either the first or second ring

4. The length of an electromagnetic wave in air is 0.6 microns. What is the frequency of oscillations of the intensity vector electric field in this wave? Velocity of propagation of electromagnetic waves With= 3 108 m/s.

2) 5 1013Hz 4) 5 1014Hz

5. How will the electric capacitance of a flat capacitor change if the distance between the plates is doubled?

1) Will not change

2) will increase by 2 times

3) Decrease by 2 times

4) Among the answers 1-3 there is no correct one.

6. How will the period of natural electromagnetic oscillations in the circuit (see figure) change if the key K is moved from position 1 to position 2?

1) will decrease by 4 times 3) will decrease by 2 times

2) will increase by 4 times 4) will increase by 2 times

Level B

7. Establish a correspondence between the features of electromagnetic waves and their ranges.

For each position in the first column, select the corresponding position in the second and write down to the table selected numbers under the corresponding letters.

FEATURES ELECTROMAGNETIC

WAVES WAVES

A) Waves with a minimum 1) Radio waves
frequency 2) Infrared

B) Waves coming from radiation 3) Visible radiation

heated ultraviolet

B) Waves with radiation
penetrating power 5) X-ray

Radiation

Level C

8.The student decided to use a laser pointer to determine the refractive index of an unknown liquid. He took a rectangular plastic box with transparent walls, poured liquid into it and sprinkled baby powder to make the beam visible. To measure the angle of incidence and the angle of refraction, he used two identical protractors (see figure) and determined that the angle of incidence was 75° (sin75° = 0.97) . What is the refractive index P?

9. The table shows how the charge of the capacitor changed in oscillatory circuit over time.

Calculate the capacitance of the capacitor in the circuit if the coil inductance is 32 mH.

Test No. 5 on the topic

"The structure of the atom and the atomic nucleus"

Option 1

1.β-radiation is

1) secondary radioactive radiation at the beginning of a chain reaction

2) the flux of neutrons generated in a chain reaction

3) electromagnetic waves

4) electron flow

2. When studying the structure of the atom in the framework of the Rutherford model, the model of the nucleus is

1) electrically neutral ball

2) a positively charged ball interspersed with electrons

3) a negatively charged body of small size compared to an atom

4) a positively charged body of small size compared to an atom

3. The core of the element contains

1) 92 protons, 238 neutrons

2) 146 protons, 92 neutrons

3) 92 protons, 146 neutrons

4) 238 protons, 92 neutrons

4. The figure shows the diagrams of four atoms. Black dots indicate electrons. Atom corresponds to the scheme

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MOU "Dubovskaya secondary school of the Belgorod region Belgorod region With in-depth study individual items»

Physics teacher

Baryshenskaya Elena Nikolaevna

16 variants of control work in physics are offered, section "Kinematics". The tasks are not repeated in any version, which allows you to objectively assess the knowledge of students on this topic. The control work contains 5 tasks. The first three are for a basic level of, solving which the student receives a grade of "satisfactory".

Option 1

The cyclist drove down the hill in 1 min, moving with an acceleration of 0.5 m / s 2. Determine the length of the slide if the cyclist's initial speed is 18 km/h.

A football player hits the ball with a speed of 3 m/s. What is the speed of the ball after 5 seconds? if the acceleration is 0.25 m/s 2 .

How long will it take for a car moving with an acceleration of 0.6 m/s 2 to increase its speed from 36 km/h to 108 km/h.

The bullet in the barrel of the machine moves with an acceleration of 616 m/s 2 . What is the speed of the bullet if the barrel length is 41.5 cm?

Control work on the topic "Kinematics"

Option 2

The cyclist is moving downhill with an acceleration of 0.4 m/s 2 . What speed will the cyclist acquire after 10 seconds if his initial speed is 18 m/s.

A cyclist is moving down a mountain from a state of rest. After what period of time will its speed become 3 m/s if the acceleration is 0.5 m/s.

A train traveling at a speed of 54 km/h stops 2 minutes after braking. Determine the stopping distance if the acceleration is 0.5 m/s 2 .

Ball. rolling down an inclined chute from a state of rest, in 1 s it traveled a distance of 10 cm. How far will it travel in 3s?

A slope 100 m long was covered by a skier in 20 s, moving with an acceleration of 0.3 m/s 2 . What is the speed of the skier at the beginning and end of the slope?

Control work on the topic "Kinematics"

Option 3

1. A skier descends a mountain with an initial speed of 6 m/s and an acceleration of 0.5 m/s 2 . What is the length of the mountain if the descent from it lasted 12 seconds?

2. The bus is moving at a speed of 54 km/h. At what distance from the stop should the driver start braking if, for the convenience of passengers, the acceleration should not exceed 1.2 m/s2?

3. The coordinate of a moving body changes over time according to the following law: X= - 1 + 3 t– t 2 . Determine the initial coordinate of the body, the projection of the initial velocity and the projection of the acceleration. Specify the nature of the movement of the body.

4. According to the velocity projection graph shown in the figure, determine the acceleration with which the body moved and the movement it made in time 8 With.

Control work on the topic "Kinematics"

Option 4

1. At what speed can an airplane land on an 800 m long airfield runway when braking with an acceleration of 5 m/s2?

2. In how many seconds after departure from the station will the speed of the subway train reach 72 km/h if the acceleration during acceleration is 1 m/s 2 ?

3 . The coordinate of a moving body changes over time according to the following law: x \u003d 10 - t-2t2 . Determine the initial coordinate of the body, the projection of the initial velocity and the projection of the acceleration. Specify the nature of the movement of the body.

4. According to the velocity projection graph shown in the figure, determine the acceleration with which the body moved and the movement it made in 10 s.

5 . The bus, moving away from the stop, moves with uniform acceleration and passes 2.5 m in the third second. Determine the path traveled by the bus in the fifth second.

Control work on the topic "Kinematics"

Option 5

1 . Determine the depth of the gorge if a stone of mass 4 kg reaches it in 6 s.2 . A ball of mass 500 g is thrown vertically upwards with a speed of 18 m/s. How high will the body rise in 3 seconds?3 . The circus performer, when falling from the trapezoid onto the net, had a speed of 9 m/s. With what acceleration did the braking take place if the grid sagged by 1.5 m before it came to a complete stop?4 . A bullet in the barrel of a Kalashnikov assault rifle moves with an acceleration of 616 m/s. What is the speed of the bullet if the barrel length is 41.5 cm?5. At uniformly accelerated motion from a state of rest, the body covers a distance of 90 cm in the fifth second. Determine the path that the body will cover in the seventh second.

Control work on the topic "Kinematics"

Option 6

1 . A rifle bullet pierced a wall 35 cm thick, and its speed decreased from 800 to 400 m/s. Determine the acceleration of the bullet.2. An arrow of mass 200 g is fired vertically upward at a speed of 30 m/s. How high will the arrow rise in 2 seconds?3. 4. With what speed did the train move before the start of braking, if during braking it moved with a constant acceleration of 0.5 m / s and to a stop.5 . The ball begins to roll down from the state of rest along the inclined chute and in the fourth second it travels a distance of 17.5 cm.

Control work on the topic "Kinematics"

Option 7

1. What distance will the body cover in the eighth second of free fall?2. A body is thrown vertically downwards from a height of 20 m. How long will it fall and what will be its speed at the moment it hits the ground? (g taken equal to 10 m/s2)3. How long will it take for a car moving from rest with an acceleration of 0.5 m/s2 to cover a distance of 50 m?4. 5 . The body, moving from a state of rest with an acceleration of 6 m/s 2 , reached a speed of 36 m/s, and then stopped after 5 s. Determine the distance traveled by the body during the entire movement?

Control work on the topic "Kinematics"

Option 8

1. The cyclist is moving downhill with an acceleration of 0.3 m/s2. What speed will the cyclist acquire after 20 seconds if his initial speed is 4 m/s.2. During emergency braking, a car moving at a speed of 72 km/h stopped after 5 s. Find the stopping distance of the car.

3 .With what acceleration does the body move if in the sixth second of this movement it traveled a distance equal to 11 m? The initial speed of movement is zero.

4 . Two bodies are simultaneously launched in one direction from one point: one is uniformly accelerated with a speed of 98 m/s, the other is uniformly accelerated with an initial velocity equal to zero and an acceleration of 980 cm/s2. How long will it take for the second body to overtake the first?5. The motorcyclist started moving from a state of rest and moved with an acceleration of 2 m / s 2 for 5 s, then for 5 minutes he moved uniformly and, having started braking, stopped after 10 s. Can you tell me the whole path he has taken?

Control work on the topic "Kinematics"

Option 9

1 .With what acceleration does the body move if in the sixth second of motion it has traveled a path equal to 11 m? The initial velocity of the body is zero.2. A stone falls freely from a height of 20 m. What distance will the stone travel in the last second of its fall?

3 . A train moving at a speed of 16 m/s after the start of braking to a stop travels a distance of 128 m. Find the time elapsed from the start of braking to a stop.

4 . The free fall time of the first body to the ground is 2 s, and the second - 4 s. By how much is the height from which the second body falls greater than the height from which the first body falls? The initial velocities of the bodies are equal to zero. Ignore air resistance.

5. With whichA body moves with acceleration if it has traveled 30 m in the eighth second of its motion? Find the path traveled in 10 seconds. (Vo = 0).

Control work on the topic "Kinematics"

Option 10

1. The train is moving at a speed of 36 km/h. If the engines are turned off, then the train, moving uniformly slow, stops after 20 s.Find how far from the stop you should turn off the engine gates.

2. From what height does a body fall from rest if its velocity at the moment of impact with the ground is 20 m/s? Air resistance is ignored.

3. The body moves uniformly with an acceleration of 3 m/s 2 . The time of movement of the body from the moment of the beginning of the countdown to the stop is 1.5 s. Determine the initial speed of the body.

4. The car traveled the first 40 m of a 25 m distance in 10 s. What was its acceleration and what speed did it develop?5. The path traveled by the body during uniformly accelerated motion without an initial velocity in 4 s is 4.8 m. What is the path traveled by the body in the fourth second of motion?

Control work on the topic "Kinematics"

Option 11

The body falls from a height of 20 m. How long will it take for the body to pass the first and last meter your way?

2. What distance does the car travel in the first two seconds of uniformly accelerated motion? The value of the car's acceleration is 2.5 m/s 2 . The initial speed is zero.

3. Starting off, the car moves uniformly accelerated and by the end of the second second acquires a speed of 3 m/s. Determine the modulus of the car's acceleration.

4. A stone falls freely from a height of 500 m. Which path will the kaMen in the penultimate second of his fall?

5. The figure shows the graphs of the velocities of two bodies.

Determine: a) the initial and final speeds of each of the bodies;

b) at what point in time both bodies had the same speed;

c) with what acceleration the bodies were moving;

d) write the equations of velocity and displacement for each body.

Control work on the topic "Kinematics"

Option 12

A stone falls freely from a height of 500 m. What path will the stone take in the last second of its fall?

The body moves uniformly with an initial speed of 6 m/s and an acceleration of 2 m/s 2 . What distance will the body cover in 2 s after the start of the countdown?

With uniformly slow motion, the speed of a body decreases from 5 m/s to 2 m/s in 2 s. Determine the modulus of acceleration of the body.

During emergency braking, a car moving at a speed of 25 m/s stopped after 5 s. Find the stopping distance.

The figure shows graphs of the velocities of two bodies.

Determine: a) the speed of the first body;

b) the initial and final velocities of the second body;

c) acceleration of the movement of the second body;

d) after how many seconds both bodies acquired the same speed;

e) write the equations of velocity and displacement for each body.

Control work on the topic "Kinematics"

Option 13

For 4 s of uniformly accelerated movement, the modulus of the body's velocity increased by 6 m/s. Determine the modulus of acceleration of the body.

2 .A car moving in a straight line at a speed of 20 m/s began to slow down with an acceleration of 4 m/s2. How far will the car travel from the moment it starts braking until it comes to a stop?

3 . The body moves uniformly with an acceleration of 1 m/s 2 and an initial speed of 4 m/s. What distance will the body cover by the moment when its speed becomes equal to 2 m/s?

4. The aircraft, when taking off from the ground, has a speed of 240 km / h and runs a distance of 790 m along a concrete path.did the run continue and with what acceleration?

5. The body, moving uniformly accelerated, within the fifth second from the beginning of the movement passed 45 m. With what acceleration was the body moving? What is its speed at the end of the fifth second? What is the distance traveled by the body in the first second?

Control work on the topic "Kinematics"

Option 14

The speed of a car moving uniformly with an acceleration of 2 m/s 2 increased from 10 m/s to 14 m/s. Determine the distance traveled by the car during the specified change in speed.

The body moves uniformly with an initial speed of 18 m/s. Determine the module of acceleration of the body, if in the first two seconds after the start of the countdown, the body traveled a distance of 24 m.

The speed of a body thrown vertically upwards from the surface of the Earth is 30 m/s. Determine the height to which the body will rise 2 seconds after the throw. Ignore air resistance.

Determine the initial speed and acceleration of the car, if moving uniformly accelerated, in the first 3 s it traveled 18 m, and in the first 5 s - 40 m.

A body with uniformly accelerated motion covers a path equal to 24 m in the first 4 s. Determine the module of the initial velocity of the body if the body travels a distance of 64 m in the next 4 s.

Control work on the topic "Kinematics"

Option 15

1 . 1. What speed does a trolleybus acquire in 10 s if it starts off with an acceleration of 1.2 m / s 2?2 . A train traveling at a speed of 18 km/h stops when braking for 10 s. Find its acceleration?3 . Determine the initial velocity of a body if it is thrown vertically down from a height of 125 m above the earth's surface and reaches it after 5 s?4 .What is the length of the landing run for an aircraft if its landing speed is 144 km/h and the deceleration time is 20 s?

5 With what acceleration does the body move if it has traveled 20 m in the third second of motion? Find his speed and path to the end of the 10th sekunds if the initial speed is zero.

Control work on the topic "Kinematics"

Option 16

1 .The skier starts downhill and travels 50 m in 20 seconds. Determine the skier's acceleration and speed at the end of the descent.2 . During emergency braking, the car stopped after 2 s. Find the stopping distance of the car if it started braking at a speed of 54 km/h.3. A ball is thrown vertically upwards from a height of 10 m above the ground with a speed of 20 m/s. How far from the ground will the ball be after 3 seconds?

4 . 3a, for the first 3 seconds, the body travels 9 m in a horizontal direction, starting at zero speed. How far will it travel in ten seconds?

5. In the fifth second of uniformly slow motion, the point travels 5 cm and stops. What distance does the point cover in the third second of this movement?

Topic: Examination No. 1 on the topic "Kinematics".

Target: To test the knowledge, skills and abilities of students on the topic "Cinematics"

The control work is thematic. Each option contains tasks of different difficulty levels. The student can familiarize himself with all the tasks and independently choose the level of difficulty that is acceptable for him at the moment.

Each option includes 6 tasks.

1,2,3 tasks - the first level of difficulty. These tasks are designed for the assimilation of basic concepts, for a simple display of material or simple calculations for recognition and reproduction.

4.5 tasks - the second level of difficulty. These tasks are 2 - 4 logical steps. The solution of these tasks requires a deeper knowledge of the course of physics and allows them to be applied in standard situations.

Task 6 - the third level of complexity - tasks, the solution of which requires the creative use of acquired knowledge and allows them to be applied in non-standard situations.

The correctness of the performance of each task is evaluated in points:

1,2,3 tasks: 1 - 2 points each,

4 - 5 tasks: 3 points each,

Task 6: 4 points each.

To evaluate the results of the control work, the following criteria should be used:

estimates

points

11-16

8-10

5-7

0-4

A car is moving at a speed of 72 km/h. Determine the acceleration of the car if it stops after 20 minutes.

1. A trolleybus starts off with an acceleration of 1.2 m/s 2 . What is the speed of a trolleybus in 1 minute?

2. The dependence of the path on time for a rectilinearly moving body has the form:S( t) = 2 t + 3 t², where all quantities are expressed in SI units. Write down the equation for the speed of a moving body. Find what is the displacement of the body in 5 seconds.

2. The coordinate of the body changes over time according to the formulax = 5 – 3 t, where all quantities are expressed in SI units. What is the coordinate of this body 5 s after the start of motion? What is the displacement during this time?

3. According to the graph of the dependence of the speed of the body's movement on time, determine the nature of the movement of the body, the initial speed and acceleration in each section.

4
.

5. During emergency braking, a car moving at a speed of 72 km/h stopped after 5 s. Find the stopping distance.

5. A slope 100 m long was covered by a skier in 20 s, moving with an acceleration of 0.3 m/s². What is the speed of the skier at the beginning and at the end of the slope?

6. X ( t), S x ( t)

X ( t), S x ( t)

A car is moving at a speed of 108 km/h. Determine the acceleration of the car if it stops after 3 minutes.

1. A trolleybus starts off with an acceleration of 2 m/s 2 . What is the speed of a trolleybus in 7 minutes?

2. The dependence of the coordinate of some body on time is described by the equationx = 8 t - t², where all quantities are expressed in SI units. At what point in time is the speed zero?

2. The equation of motion of a material point has the formx = -0,2 t². Find the coordinate and speed of the point in 5 seconds.

3. According to the graph of the dependence of the speed of the body's movement on time, determine the nature of the movement of the body, the initial speed and acceleration in each section.

4. Find the place and time of the meeting of two bodies in 2 ways (graphical and analytical).

5. The train, moving downhill, traveled 340 m in 20 s and developed a speed of 19 m/s. How fast was the train moving?

5. A bullet in the barrel of a Kalashnikov assault rifle moves with an acceleration of 616 km/s². What is the speed of the bullet if the barrel length is 41.5 cm?

6. According to the graph of the dependence of the speed of movement of the body on time, construct graphs of the dependence a X ( t), S x ( t).

6. According to the graph of the dependence of the speed of the movement of the body on time, construct graphs of the dependence a X ( t), S x ( t).

Test work on the topic Kinematics for students in grade 10 with answers. The control work consists of 5 options, each with 8 tasks.

1 option

A1. Which of the following bodies leaves a visible trajectory?

1) Stone falling in the mountains
2) The ball during the game
3) A skier laying a new track
4) Athlete making a high jump

A2. The material point, moving in a straight line, moved from the point with coordinates (-2; 3) to the point with coordinates (1; 7). Determine the projection of the displacement vector on the coordinate axes.

1) 3 m; 4 m
2) -3 m; 4 m
3) 3 m; -4 m
4) -3 m; -4 m

A3. During an uphill climb, the speed of a cyclist moving in a straight line and uniformly accelerated changed in 8 s from 5 m/s to 3 m/s. In this case, the acceleration of the cyclist was

1) -0.25 m/s 2
2) 0.25 m/s 2
3) -0.9 m/s 2
4) 0.9 m/s 2

A4. In a rectilinear uniformly accelerated motion with an initial speed equal to zero, the path traveled by the body in three seconds from the start of motion is greater than the path traveled in the first second, in

1) 2 times
2) 3 times
3) 4 times
4) 9 times

A5. The graph shows the dependence of the projection of the velocity of a body moving along the axis OH, from time.

What is the movement of the body at the time t= 5 s?

1) 2 m
2) 6 m
3) 8 m
4) 10 m

B1. A car 2.4 m wide, moving at a speed of 15 m/s, was pierced by a bullet flying perpendicular to the direction of the car. The displacement of the holes in the walls of the car relative to each other is 6 cm. Find the speed of the bullet.

IN 2. Two pulleys of different radii are connected by a belt drive and set in rotational motion (see Fig.).

A to the point V

Physical quantities

A) line speed
B) rotation period
B) angular velocity

Their change

1) increase
2) decrease
3) will not change

C1. Within 20 seconds, the rocket rises with a constant acceleration of 8 m/s 2 , after which the rocket engines are turned off. What is the highest altitude the rocket has reached?

Option 2

A1. The movement of a horse and a butterfly is investigated. The material point model can be used to describe motion

1) only horses
2) only butterflies
3) both horses and butterflies
4) no horse, no butterfly

A2. In a pipeline with a cross-sectional area of 100 cm2, oil moves at a speed of 1 m/s. How much oil passes through the pipeline in 10 minutes?

1) 0.1 m 3
2) 0.6 m 3
3) 6 m 3
4) 60 m3

A3. The car is moving along the highway at a constant speed and starts accelerating. Projection of acceleration onto an axis directed along the vector of the vehicle's initial speed

1) negative
2) positive
3) equal to zero
4) can be any sign

A4. The carriage descends along an inclined plane, 15 cm long, within 0.26 s. Determine the acceleration of the carriage if the movement starts from rest.

1) 1.7 m/s 2
2) 2.2 m/s 2
3) 4.4 m/s 2
4) 6.2 m/s 2

A5. The figure shows a path dependence graph s cyclist from time to time t. In what time interval did the cyclist not move?

1) 0 s to 1 s
2) 1 s to 3 s
3) 3 s to 5 s
4) From 5 s onwards

B1. On a path of 60 m, the speed of the body decreased three times in 20 s. Determine the speed of the body at the end of the path, assuming that the acceleration is constant.

B2. O made two points A and V(and OB = VA

A to the point V?

Physical quantities

A) angular speed

Their changes

1) increase
2) decrease
3) will not change

C1. The balloon rises from the Earth with an acceleration of 2 m / s 2 vertically upwards without initial speed. After 20 s after the start of movement, an object fell out of it. Determine the highest height relative to the Earth that the object has been.

3 option

A1. Two tasks are solved:

A) the rate of submergence of the submarine is calculated;
B) the time of movement of the boat from one military base to another.

In which case can a submarine be considered as a material point?

1) Only in the first
2) Only in the second
3) In both cases
4) Neither in the first nor in the second

A2. The material point, moving rectilinearly, has moved from the point with coordinates (-2; 3) to the point with coordinates (1; 7). Determine the magnitude of the displacement vector on the coordinate axis.

1) 1 m
2) 2 m
3) 5 m
4) 7 m

A3. The sled rolled down one hill and drove up another. During the ascent to the hill, the speed of the sledge, moving in a straight line and uniformly accelerated, changed from 43.2 km/h to 7.2 km/h in 4 s. In this case, the acceleration module was equal to

1) -2.5 m/s 2
2) 2.5 m/s 2
3) -3.5 m/s 2
4) 3.5 m/s 2

A4. K.E. Tsiolkovsky, in his book "Out of the Earth", describing the flight of a rocket, noted that 8 s after the launch, the rocket was at a distance of 3.2 km from the Earth's surface. How fast was the rocket moving?

1) 1000 m/s 2
2) 500 m/s 2
3) 100 m/s 2
4) 50 m/s 2

A5. Determine the path traveled by the body in 20 s from the graph of the modulus of velocity versus time.

1) 60 m
2) 80 m
3) 50 m
4) 40 m

IN 1. The hunter shoots a bird flying at a distance of 36 m from him at a speed of 15 m/s in a direction perpendicular to the aiming line. What distance will the bird fly from the moment of the shot until the shot hits it, if the speed of the shot when it leaves the gun is 400 m/s?

IN 2. Two pulleys of different radii are connected by a belt drive and set in rotational motion (see Fig.).

How do the physical quantities listed in the first column change when moving from a point V to the point A if the belt is not slipping?

Physical quantities

A) line speed
B) rotation period
B) angular velocity

Their change

1) increase
2) decrease
3) will not change

C1. Within 20 seconds, the rocket rises with a constant acceleration of 8 m/s 2 after which the rocket engines are turned off. How long will it take for the rocket to hit Earth?

4 option

A1. Which of the following bodies is moving in a straight line?

1) End of the minute hand
2) Car on a sharp turn
3) The boy on the swing
4) Rocket taking off

A2. A train of length 350 m moves uniformly at a speed of 15 m/s. He crosses the bridge in 2 minutes. Determine the length of the bridge.

1) 335 m
2) 550 m
3) 1235 m
4) 1450 m

A3. The ball rolls down an inclined straight chute with constant acceleration, modulo equal to 2 m/s 2 . 3a 3 s the speed of the ball increases by

1) 1.5 km/h
2) 5.4 km/h
3) 6.0 km/h
4) 21.6 km/h

A4. The skier passed a mountain 50 m long in 10 s, moving with an acceleration of 0.4 m/s 2 . What is the speed of the skier at the beginning and at the end of the mountain?

1) 3 m/s and 6 m/s
2) 2 m/s and 8 m/s
3) 4 m/s and 7 m/s
4) 3 m/s and 7 m/s

A5. The figure shows a graph of the dependence of the projection of the body's velocity on time.

The projection of the acceleration of the body in the time interval from 8 to 12 s is represented by a graph

B1. The speed of a material point on a path of 60 m increased by 5 times in 10 s. Determine the acceleration of the body, assuming it to be constant.

IN 2. On the surface of a disk centered at a point O made two points A and V(and OB = VA), and brought the disk into rotation at a constant linear speed (see Fig.).

How will those listed in the first column change? physical quantities when moving from a point V to the point A?

Physical quantities

A) angular speed
B) the period of revolution in a circle
B) centripetal acceleration

Their change

1) increase
2) decrease
3) will not change

5 option

A1. Can a ruler be taken as a material point?

1) Only with its rotational movement
2) Only when it is moving forward
3) Only with its oscillatory movement
4) It is possible with any of its movements

A2. The water flow in the channel per minute is 16.2 m 3 The width of the channel is 1.5 m and the water depth is 0.6 m. Determine the speed of the water.

1) 0.1 m/s
2) 0.2 m/s
3) 0.3 m/s
4) 18 m/s

A3. Cars and trucks simultaneously start moving from a state of rest. The acceleration of a passenger car is 4 times greater than that of a truck. How many times faster will a car develop in the same time?

1) 2 times
2) 4 times
3) 8 times
4) 16 times

A4. The speed of a bullet when leaving the barrel of a pistol is 250 m/s. The length of the barrel is 0.1 m. Determine approximately the acceleration of the bullet inside the barrel, if we assume that its movement is uniformly accelerated.

1) 312.5 km/s 2
2) 114 km/s 2
3) 1248 m/s 2
4) 100 m/s 2

A5. body moving along the axis OH rectilinearly and uniformly accelerated, for some time reduced its speed by 2 times. Which of the graphs of the projection of acceleration versus time corresponds to such a movement?

B1. Emergency braking of the car took 4 s and occurred with a constant acceleration of 4 m/s 2 . Find the stopping distance.

IN 2. Two pulleys of different radii are connected by a belt drive and set in rotational motion (see Fig.).

How do the physical quantities listed in the first column change when moving from a point A to the point V if the belt is not slipping?

Physical quantities

A) line speed
B) frequency
B) angular velocity

Their change

1) increase
2) decrease
3) will not change

C1. The balloon rises from the Earth with an acceleration of 2 m / s 2 vertically upwards without initial speed. 10 s after the start of movement, an object fell out of it. Determine how long after its fall the object will be at a height of 75 m relative to the Earth?

Answers to test on the topic Kinematics Grade 10
1 option
A1-3
A2-1
A3-1
A4-4
A5-1
V1-600 m/s
B2-312
С1-2880 m
Option 2
A1-3
A2-3
A3-2
A4-3
A5-3
H1-1.5 m/s
B2-332
С1-480 m
3 option
A1-2
A2-3
A3-2
A4-3
A5-1
H1-1.35m
B2-321
C1-40s
4 option
A1-4
A2-4
A3-4
A4-4
A5-3
B1-0.8 m/s 2
B2-331
C1-8.37 s
5 option
A1-2
A2-3
A3-2
A4-1
A5-4
H1-32 m
B2-322
C1-5 s