Momentum and Impulse: Interactive Learning Quizzes for Physics I

Question 1

What is the mathematical formula used to calculate momentum?

Accepted Answer

m * v

Answer

F * t

Answer

KE / v

Answer

Fr / v

Question 2

Which of the following options accurately defines impulse?

Accepted Answer

Force applied over time

Answer

Mass multiplied by velocity

Answer

Change in kinetic energy

Answer

Rate of change of momentum

Question 3

State the law of conservation of momentum.

Accepted Answer

The total momentum of an isolated system remains constant.

Answer

The total energy of an isolated system remains constant.

Answer

The total angular momentum of an isolated system remains constant.

Answer

The total mass of an isolated system remains constant.

Question 4

Identify an example of an elastic collision.

Accepted Answer

A ball bouncing off a wall

Answer

A car crash

Answer

A person jumping on a trampoline

Answer

A bullet hitting a metal plate

Question 5

Which of the following is an example of an inelastic collision?

Accepted Answer

A car crash

Answer

A ball bouncing off a wall

Answer

A person jumping on a trampoline

Answer

A bullet hitting a metal plate

Question 6

What is the physical quantity known as the coefficient of restitution?

Accepted Answer

A measure of the elasticity of a collision

Answer

A measure of the momentum of a collision

Answer

A measure of the energy of a collision

Answer

A measure of the force of a collision

Question 7

Which unit is used to express momentum?

Accepted Answer

kg m/s

Answer

N s

Answer

J

Answer

W

Question 8

What is the SI unit for impulse?

Accepted Answer

N s

Answer

kg m/s

Answer

J

Answer

W

Question 9

An object with momentum 10 kg m/s is subject to a force of 2 N. Determine the impulse acting on the object over a time interval of 5 s.

Accepted Answer

50 N

Answer

2 N

Answer

10 N

Answer

100 N

Question 10

In a collision involving two objects, which quantity remains constant?

Accepted Answer

Momentum

Answer

Energy

Answer

Velocity

Answer

Acceleration

Question 11

A 2 kg block is moving at a speed of 3 m/s. A force of 4 N is applied to the block for 2 seconds. Determine the change in momentum of the block.

Accepted Answer

8 kg m/s

Answer

2 kg m/s

Answer

4 kg m/s

Answer

12 kg m/s

Question 12

An object is acted upon by a net force of 20 N for 5 seconds. What is the magnitude of the impulse imparted to the object?

Accepted Answer

100 N

Answer

2 N

Answer

10 N

Answer

200 N

Question 13

Which of the following is NOT a consequence of the conservation of momentum?

Accepted Answer

Momentum can be created or destroyed.

Answer

Total momentum of an isolated system remains constant.

Answer

In a closed system, the sum of the momenta of all particles is always zero.

Answer

Momentum can be transferred between objects.

Question 14

Which of the following is an example of a non-impulsive force?

Accepted Answer

A force applied to an object over a long period of time

Answer

A hammer striking a nail

Answer

A sudden impact between two objects

Answer

A force applied to an object while it is moving

Question 15

In a system of colliding objects, the total momentum of the system:

Accepted Answer

Remains the same in magnitude but changes in direction.

Answer

Increases in magnitude.

Answer

Decreases in magnitude.

Answer

Is always zero.

Question 16

A ball with mass m1 and velocity v1 collides head-on with a stationary ball of mass m2. Which of the following statements is true regarding the momentum of the system before and after the collision?

Accepted Answer

Total momentum is conserved.

Answer

Momentum is not conserved before but is conserved after the collision.

Answer

Momentum is conserved before but not after the collision.

Answer

Momentum is not conserved either before or after the collision.

Question 17

A baseball is hit by a bat, giving it an initial velocity of 50 m/s. If the mass of the baseball is 0.15 kg, what is its momentum?

Accepted Answer

7.5 kg m/s

Answer

5.0 kg m/s

Answer

2.5 kg m/s

Answer

1.5 kg m/s

Question 18

Which of the following is NOT a type of collision?

Accepted Answer

Superelastic collision

Answer

Elastic collision

Answer

Inelastic collision

Answer

Perfectly inelastic collision

Question 19

A car of mass m1 traveling at velocity v1 collides with a car of mass m2 traveling at velocity v2. If the two cars stick together after the collision, what is their combined velocity?

Accepted Answer

(m1v1 + m2v2) / (m1 + m2)

Answer

(m1v1 - m2v2) / (m1 - m2)

Answer

(m2v2 - m1v1) / (m2 - m1)

Answer

(m1v1 + m2v2) / (m2 - m1)

Question 20

An object of mass m is dropped from a height h. What is its momentum just before it hits the ground?

Accepted Answer

mg√(2h)

Answer

mg√(h)

Answer

mg(2h)

Answer

mg(h)

Question 21

A ball is thrown vertically upward with an initial velocity v. What is the maximum height it will reach?

Accepted Answer

v^2 / 2g

Answer

v^2 / g

Answer

2v^2 / g

Answer

g / v^2

Question 22

Which of the following factors does NOT affect the momentum of an object?

Accepted Answer

Position

Answer

Mass

Answer

Velocity

Answer

Force

Question 23

An object with a momentum of 10 kg·m/s experiences an impulse of 5 N·s. What is the final momentum of the object?

Accepted Answer

15 kg·m/s

Answer

5 kg·m/s

Answer

10 kg·m/s

Answer

20 kg·m/s

Question 24

Which of the following is the unit of impulse?

Accepted Answer

Newton-second (N·s)

Answer

Newton-meter (N·m)

Answer

Kilogram-meter per second (kg·m/s)

Answer

Joule (J)

Question 25

Which of the following is NOT a type of collision?

Accepted Answer

Momentum-conserving

Answer

Elastic

Answer

Inelastic

Answer

Perfectly inelastic

Question 26

Which of the following is the SI unit of impulse?

Accepted Answer

Newton-second

Answer

Kilogram-meter

Answer

Joule

Answer

Watt

Question 27

In collisions, which of the following is always conserved?

Accepted Answer

Momentum

Answer

Energy

Answer

Both momentum and energy

Answer

Neither momentum nor energy

Question 28

A 1000 kg rocket moving at 100 m/s ejects 100 kg of mass with a velocity of 500 m/s in the opposite direction. What is the rocket's new velocity?

Accepted Answer

75 m/s

Answer

50 m/s

Answer

100 m/s

Answer

125 m/s

Question 29

Which type of collision results in the greatest loss of kinetic energy?

Accepted Answer

Perfectly inelastic collision

Answer

Elastic collision

Answer

Inelastic collision

Answer

Superelastic collision

Question 30

Which of the following situations represents an impulse?

Accepted Answer

A baseball bat striking a ball

Answer

A car driving at a constant speed

Answer

A person standing still

Answer

A book resting on a table

Question 31

How is momentum related to kinetic energy?

Accepted Answer

Momentum is directly proportional to kinetic energy.

Answer

Momentum is inversely proportional to kinetic energy.

Answer

Momentum is equal to kinetic energy.

Answer

Momentum is not related to kinetic energy.

Question 32

Which vector describes the direction of a particle's momentum?

Accepted Answer

Velocity

Answer

Acceleration

Answer

Force

Answer

Displacement

Question 33

Which formula represents the magnitude of linear momentum for an object with mass 'm' moving with velocity 'v'?

Accepted Answer

p = mv

Answer

p = mv^2

Answer

p = (1/2)mv

Answer

p = (1/2)mv^2

Question 34

In a collision between two objects, the total momentum of the system:

Accepted Answer

Remains constant

Answer

Increases

Answer

Decreases

Answer

Varies with the temperature

Question 35

Impulse is defined as the:

Accepted Answer

Change in momentum of an object

Answer

Force applied to an object

Answer

Velocity of an object

Answer

Acceleration of an object

Question 36

In an inelastic collision, the:

Accepted Answer

Kinetic energy is not conserved

Answer

Total mechanical energy is conserved

Answer

Momentum is not conserved

Question 37

A ball of mass 0.5 kg strikes a wall with a velocity of 10 m/s and rebounds with a velocity of -5 m/s. The impulse exerted by the wall on the ball is:

Accepted Answer

15 kg m/s

Answer

10 kg m/s

Answer

5 kg m/s

Answer

20 kg m/s

Question 38

Which of the following is a unit of impulse?

Accepted Answer

Ns

Answer

J s

Answer

m/s

Answer

kg m/s^2

Question 39

In a perfectly elastic collision between two objects, both:

Accepted Answer

Momentum and kinetic energy are conserved

Answer

Neither momentum nor kinetic energy is conserved

Answer

Kinetic energy is conserved but not momentum

Answer

Momentum is conserved but not kinetic energy

Question 40

A ball of mass 2 kg moving with a velocity of 5 m/s strikes a stationary ball of mass 1 kg. After the collision, the first ball has a velocity of 2 m/s. What is the velocity of the second ball after the collision?

Accepted Answer

7 m/s

Answer

3 m/s

Answer

10 m/s

Answer

5 m/s

Question 41

An impulse of 10 Ns is applied to a body of mass 2 kg for a time of 5 seconds. What is the change in momentum of the body?

Accepted Answer

50 kg m/s

Answer

20 kg m/s

Answer

10 kg m/s

Answer

100 kg m/s

Question 42

A car of mass 1000 kg traveling at a speed of 20 m/s collides head-on with a second car of mass 500 kg traveling at a speed of 30 m/s. If the cars stick together after the collision, what is their combined speed immediately after the collision?

Accepted Answer

15 m/s

Answer

25 m/s

Answer

10 m/s

Answer

20 m/s

Question 43

A ball is dropped from a height of 10 m. What is its velocity just before it hits the ground?

Accepted Answer

14 m/s

Answer

20 m/s

Answer

10 m/s

Answer

28 m/s

Question 44

A rocket is launched vertically from the ground with an initial velocity of 100 m/s. What is its maximum height?

Accepted Answer

500 m

Answer

2000 m

Answer

250 m

Answer

1000 m

Question 45

A ball is thrown horizontally from a height of 10 m with a velocity of 20 m/s. What is the range of the ball?

Accepted Answer

40 m

Answer

60 m

Answer

80 m

Answer

20 m

Question 46

A car of mass 1000 kg is traveling at a speed of 20 m/s. What is its kinetic energy?

Accepted Answer

100 kJ

Answer

150 kJ

Answer

50 kJ

Answer

200 kJ

Question 47

A spring has a spring constant of 100 N/m. What is the potential energy stored in the spring when it is stretched by 0.2 m?

Accepted Answer

1 J

Answer

4 J

Answer

2 J

Answer

0.5 J

Question 48

A pendulum of length 1 m has a mass of 1 kg. What is its period of oscillation?

Accepted Answer

2 s

Answer

3 s

Answer

1 s

Answer

4 s

Question 49

A wave has a frequency of 10 Hz and a wavelength of 2 m. What is its speed?

Accepted Answer

20 m/s

Answer

30 m/s

Answer

40 m/s

Answer

10 m/s

Question 50

A 1000 kg car is traveling at 20 m/s. What is the car's momentum?

Accepted Answer

20,000 kg*m/s

Answer

50 kg*m/s

Answer

1000 kg*m/s

Question 51

A stationary object has...

Accepted Answer

Zero momentum

Answer

A constant momentum

Answer

A momentum dependent on its mass

Answer

Infinite momentum

Question 52

Two objects of equal mass collide head-on. What is the total momentum of the system after the collision?

Accepted Answer

Zero

Answer

Impossible to determine without more information

Answer

Half the initial momentum

Answer

Double the initial momentum

Question 53

A 5 kg ball traveling at 10 m/s collides with a stationary 10 kg ball. The two balls stick together after the collision. What is the velocity of the combined mass?

Accepted Answer

3.33 m/s

Answer

2.5 m/s

Answer

5 m/s

Answer

10 m/s

Question 54

Which of the following is NOT a unit of impulse?

Accepted Answer

kg*m/s²

Answer

kg*m/s

Answer

N*s

Question 55

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

Accepted Answer

50 N*s

Answer

10 N*s

Answer

25 N*s

Answer

20 N*s

Question 56

A larger impulse applied to an object will result in a...

Accepted Answer

Larger change in momentum

Answer

No change in momentum

Answer

Smaller change in momentum

Question 57

A baseball bat hitting a baseball is an example of...

Accepted Answer

An impulsive force

Answer

A gravitational force

Answer

A frictional force

Answer

A constant force

Question 58

How does the concept of impulse relate to the design of safety equipment like airbags in cars?

Accepted Answer

Airbags increase the time of impact, reducing the force experienced by the passengers.

Answer

Airbags have no effect on the force of impact.

Answer

Airbags increase the force of impact, preventing the passengers from being thrown forward.

Question 59

A rocket is launched into space. As it burns fuel, its mass decreases. What happens to the rocket's momentum?

Accepted Answer

Momentum remains constant, but velocity increases

Answer

Momentum stays constant, but velocity decreases

Answer

Momentum decreases as mass decreases

Answer

Momentum increases as mass decreases