Momentum and Impulse: Interactive Learning Quizzes for Physics Year 12

Question 1

In an elastic collision between two objects, which of the following quantities is/are conserved?

Accepted Answer

Momentum and energy

Answer

Momentum only

Answer

Energy only

Answer

Neither momentum nor energy

Question 2

Momentum of an object depends on which of the following factors?

Accepted Answer

Both mass and velocity

Answer

Mass

Answer

Velocity

Answer

Neither mass nor velocity

Question 3

What is the SI unit of impulse?

Accepted Answer

Newton-second

Answer

Newton

Answer

Joule

Answer

Pascal

Question 4

Which of the following is the definition of linear momentum?

Accepted Answer

Product of an object's mass and its velocity

Answer

Force applied to an object multiplied by the time interval

Answer

Change in momentum divided by the time interval

Answer

Work done on an object divided by its displacement

Question 5

Which of the following statements describes the law of conservation of momentum?

Accepted Answer

The total linear momentum of an isolated system remains constant.

Answer

The total angular momentum of an isolated system remains constant.

Answer

The total energy of an isolated system remains constant.

Answer

The total charge of an isolated system remains constant.

Question 6

Which of the following is an example of impulse?

Accepted Answer

A person kicking a football

Answer

A car driving at a constant speed

Answer

A ball rolling on the ground

Answer

A book lying on a table

Question 7

Which of the following is the impulse-momentum theorem?

Accepted Answer

The change in momentum of an object is equal to the impulse applied to the object.

Answer

The acceleration of an object is equal to the force applied to the object divided by its mass.

Answer

The work done on an object is equal to the change in its kinetic energy.

Answer

The power of an object is equal to the force applied to the object multiplied by its velocity.

Question 8

A ball with a mass of 0.5 kg is moving with a velocity of 10 m/s. A force of 5 N is applied to the ball for a time interval of 0.1 seconds. What is the final velocity of the ball?

Accepted Answer

15 m/s

Answer

5 m/s

Answer

10 m/s

Answer

20 m/s

Question 9

Which of the following is the SI unit of linear momentum?

Accepted Answer

Newton-seconds

Answer

Kilograms per second

Answer

Joules

Answer

Meters per second squared

Question 10

Which principle states that the total linear momentum of a closed system remains constant?

Accepted Answer

Law of Conservation of Linear Momentum

Answer

Law of Inertia

Answer

Law of Universal Gravitation

Answer

Law of Thermodynamics

Question 11

Which formula represents the relationship between impulse and change in velocity?

Accepted Answer

Impulse = mass × change in velocity

Answer

Impulse = mass ÷ change in velocity

Answer

Impulse = (mass)² × change in velocity

Answer

Impulse is not related to change in velocity.

Question 12

Which of the following is NOT a factor that influences impulse?

Accepted Answer

Height of the object

Answer

Mass of the object

Answer

Duration of force application

Answer

Magnitude of force applied

Question 13

In a collision between a moving car and a stationary object, the impulse experienced by the car is:

Accepted Answer

Equal to the impulse experienced by the stationary object.

Answer

Greater than the impulse experienced by the stationary object.

Answer

Less than the impulse experienced by the stationary object.

Answer

Cannot be determined without additional information.

Question 14

During an elastic collision, the total momentum of a closed system:

Accepted Answer

Remains the same.

Answer

Increases.

Answer

Decreases.

Answer

Becomes zero.

Question 15

Which of the following factors does not affect the magnitude of impulse?

Accepted Answer

Gravitational force

Answer

Mass of the object

Answer

Velocity of the object

Answer

Time of impact

Question 16

Define the formula for calculating linear momentum.

Accepted Answer

m * v

Answer

m * v^2

Answer

F * t

Answer

p * t

Question 17

In collisions, which quantity remains constant?

Accepted Answer

Momentum

Answer

Kinetic energy

Answer

Angular momentum

Answer

Energy

Question 18

A 1000 kg car traveling at 20 m/s collides head-on with a stationary 1500 kg car. Assuming an inelastic collision, calculate the velocity of the combined cars afterward.

Accepted Answer

6.67 m/s

Answer

10 m/s

Answer

13.33 m/s

Answer

20 m/s

Question 19

A 10 N force is exerted on a 2 kg object for 5 seconds. Calculate the change in velocity of the object.

Accepted Answer

2.5 m/s

Answer

0.5 m/s

Answer

10 m/s

Answer

20 m/s

Question 20

Which of the following is the SI unit of impulse?

Accepted Answer

N s

Answer

kg m/s

Answer

kg m/s^2

Answer

N m

Question 21

Two identical cars, each with a mass of 1000 kg, are traveling in opposite directions at 20 m/s. They collide head-on and stick together. What is the velocity of the combined cars after the collision?

Accepted Answer

0 m/s

Answer

10 m/s

Answer

20 m/s

Answer

30 m/s

Question 22

A ball is thrown vertically upward. At the highest point of its trajectory, what is its momentum?

Accepted Answer

Zero

Answer

Maximum

Answer

Minimum

Answer

Constant

Question 23

A 1000 kg car traveling at 20 m/s collides with a stationary wall and stops in 0.1 seconds. Calculate the average force exerted on the car by the wall during the collision.

Accepted Answer

20000 N

Answer

2000 N

Answer

10000 N

Answer

1000 N

Question 24

According to the principle of momentum conservation, what is the motion of a rocket in response to expelling hot gas at high velocity through its engine?

Accepted Answer

Moves forward

Answer

Moves backward

Answer

Remains stationary

Answer

Explodes

Question 25

A 50 kg child exerts an upward force of 1000 N on a trampoline. Determine the acceleration of the child.

Accepted Answer

20 m/s^2

Answer

50 m/s^2

Answer

100 m/s^2

Answer

200 m/s^2

Question 26

Which unit is used to measure impulse?

Accepted Answer

Newton-second

Answer

Kilogram-meter per second

Answer

Joule

Answer

Watt

Question 27

A car with a mass of 1000 kilograms is traveling at a speed of 20 meters per second. The car collides with a stationary car with a mass of 500 kilograms. Assuming the collision is perfectly inelastic, what is the velocity of the two cars after the collision?

Accepted Answer

13.33 m/s

Answer

10 m/s

Answer

33.33 m/s

Answer

20 m/s

Question 28

A car with a mass of 1000 kilograms is traveling at a speed of 20 meters per second. The car collides with a stationary car with a mass of 500 kilograms. Assuming the collision is perfectly elastic, what is the total momentum of the two cars after the collision?

Accepted Answer

2000 kg m/s

Answer

1000 kg m/s

Answer

500 kg m/s

Answer

3000 kg m/s

Question 29

A rocket with a mass of 1000 kilograms is moving at a speed of 1000 meters per second. It ejects fuel with a mass of 100 kilograms at a speed of 500 meters per second relative to the rocket. What is the change in kinetic energy of the rocket?

Accepted Answer

-12.5 MJ

Answer

25 MJ

Answer

-25 MJ

Answer

12.5 MJ

Question 30

A car with a mass of 1000 kg is traveling at a speed of 20 m/s. What is the momentum of the car?

Accepted Answer

20,000 kg m/s

Answer

500 kg m/s

Answer

10,000 kg m/s

Answer

50 kg m/s

Question 31

Which of the following is NOT a unit of momentum?

Accepted Answer

N s²

Answer

g cm/s

Answer

N s

Answer

kg m/s

Question 32

What is the momentum of a stationary object?

Accepted Answer

0 kg m/s

Answer

It depends on the force acting on the object

Answer

1 kg m/s

Answer

It depends on the mass of the object

Question 33

A car with a mass of 1500 kg is moving at a speed of 25 m/s. The driver applies the brakes and brings the car to a stop in 5 seconds. What is the average force exerted by the brakes?

Accepted Answer

-7500 N

Answer

-3750 N

Answer

3750 N

Answer

7500 N

Question 34

A 0.2 kg ball is thrown vertically upwards with an initial velocity of 15 m/s. What is the momentum of the ball when it reaches its highest point?

Accepted Answer

0 kg m/s

Answer

3 kg m/s

Answer

-3 kg m/s

Answer

1.5 kg m/s

Question 35

Two identical cars collide head-on. Which of the following factors will NOT affect the magnitude of the impulse experienced by each car?

Accepted Answer

The color of the cars

Answer

The mass of the cars

Answer

The duration of the collision

Answer

The initial velocity of the cars

Question 36

Which of the following is NOT a factor that affects the impulse experienced by an object?

Accepted Answer

The object's initial velocity

Answer

The object's mass

Answer

The force applied to the object

Answer

The time over which the force is applied

Question 37

A 0.5 kg ball is thrown vertically upwards with an initial velocity of 10 m/s. What is the impulse experienced by the ball during its flight from the moment it is thrown until it reaches its highest point?

Accepted Answer

5 Ns downwards

Answer

10 Ns downwards

Answer

10 Ns upwards

Answer

5 Ns upwards

Question 38

A car of mass 1000 kg traveling at 20 m/s collides head-on with a stationary car of mass 500 kg. The two cars stick together after the collision. What is the velocity of the combined mass immediately after the collision?

Accepted Answer

13.3 m/s

Answer

20 m/s

Answer

10 m/s

Answer

6.67 m/s

Question 39

A force of 50 N is applied to a 2 kg object for 0.2 seconds. What is the change in momentum of the object?

Accepted Answer

10 kg m/s

Answer

25 kg m/s

Answer

1 kg m/s

Answer

5 kg m/s

Question 40

A stationary object experiences a constant force of 10 N for 0.5 seconds. What is the impulse experienced by the object?

Accepted Answer

5 Ns

Answer

2 Ns

Answer

0.5 Ns

Answer

10 Ns

Question 41

Why is it safer to use a padded dashboard in a car in case of an accident?

Accepted Answer

The padding increases the time of impact, reducing the force experienced by the passengers.

Answer

The padding absorbs the impact energy, preventing it from reaching the passengers.

Answer

The padding reduces the mass of the car, decreasing the momentum.

Question 42

A heavy truck and a small car are both traveling at the same speed. Which vehicle has the greater momentum?

Accepted Answer

The heavy truck

Answer

The small car

Answer

It depends on the type of collision.

Answer

They have the same momentum.

Question 43

A 1000 kg car travelling at 20 m/s collides head-on with a stationary 500 kg car. The two cars stick together after the collision. What is the speed of the combined wreckage immediately after the collision?

Accepted Answer

13.3 m/s

Answer

10 m/s

Answer

20 m/s

Answer

40 m/s

Question 44

A constant force of 10 N acts on a 2 kg object for 5 seconds. What is the impulse experienced by the object?

Accepted Answer

50 Ns

Answer

2 Ns

Answer

25 Ns

Answer

100 Ns

Question 45

A 0.5 kg ball is thrown horizontally at a wall with a speed of 10 m/s and rebounds with a speed of 8 m/s. What is the magnitude of the impulse experienced by the ball?

Accepted Answer

9 Ns

Answer

1 Ns

Answer

18 Ns

Answer

0.5 Ns

Question 46

A heavy truck and a small car collide head-on. Which vehicle experiences the greater change in momentum?

Accepted Answer

Both experience the same change in momentum

Answer

The heavy truck

Answer

It depends on the speed of each vehicle

Answer

The small car

Question 47

A 1 kg ball is thrown vertically upwards with an initial speed of 10 m/s. Neglecting air resistance, what is the momentum of the ball at its highest point?

Accepted Answer

0 kg m/s

Answer

Cannot be determined

Answer

10 kg m/s

Answer

5 kg m/s

Question 48

A force of 5 N acts on an object for 2 seconds. What is the change in momentum of the object?

Accepted Answer

10 Ns

Answer

5 Ns

Answer

2.5 Ns

Answer

Cannot be determined without knowing the initial momentum

Question 49

A large mass and a small mass are moving with the same velocity. Which object has the greater momentum?

Accepted Answer

The large mass

Answer

The small mass

Answer

Both have the same momentum

Answer

It depends on the direction of motion

Question 50

A stationary object explodes into two fragments. Which statement is always true about the fragments after the explosion?

Accepted Answer

Their total momentum is zero.

Answer

They have equal kinetic energy.

Answer

Their total kinetic energy is zero.

Answer

They move in the same direction.

Question 51

A 1 kg object moving at 4 m/s collides with a stationary 2 kg object. After the collision, the 1 kg object moves at 2 m/s in the same direction. What is the velocity of the 2 kg object after the collision?

Accepted Answer

1 m/s

Answer

0.5 m/s

Answer

4 m/s

Answer

2 m/s

Question 52

Which of the following has the greatest momentum?

Accepted Answer

A lorry of mass 10,000 kg moving at 10 m/s

Answer

A bicycle of mass 10 kg moving at 30 m/s

Answer

A car of mass 1000 kg moving at 20 m/s

Answer

A person of mass 70 kg running at 5 m/s

Question 53

A force of 10 N acts on an object for 0.5 seconds.  What is the impulse delivered to the object?

Accepted Answer

5 N s

Answer

2 N s

Answer

20 N s

Answer

10 N s

Question 54

Which of the following is NOT a unit of impulse?

Accepted Answer

kg m/s²

Answer

N s

Answer

dyne s

Answer

kg m/s

Question 55

A tennis ball hits a racket with a certain momentum. The racket exerts an impulse on the ball, causing it to rebound. What is the relationship between the magnitude of the impulse and the change in momentum of the ball?

Accepted Answer

They are equal.

Answer

Impulse is greater than the change in momentum.

Answer

Impulse is less than the change in momentum.

Answer

There is no relationship.

Question 56

Two objects of different masses have the same momentum. Which object has the greater kinetic energy?

Accepted Answer

The object with the smaller mass.

Answer

Cannot be determined from the given information.

Answer

The object with the larger mass.

Answer

They have the same kinetic energy.