The Law Of Conservation Of Momentum! Physics Trivia Quiz

14 Questions | By Amoverby | Updated: Mar 22, 2022 | Attempts: 817

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The Law Of Conservation Of Momentum! Physics Trivia Quiz - Quiz

Questions and Answers

1.

When comparing the momentum of two moving objects, which of the following is correct?
- A.
  
  The object with the higher velocity will have less momentum if the masses are equal.
- B.
  
  The more massive object will have less momentum if its velocity is greater.
- C.
  
  The less massive object will have less momentum if the velocities are the same.
- D.
  
  The more massive object will have less momentum if the velocities are the same.
2.

Two skaters stand facing each other. One skater’s mass is 60 kg, and the other’s mass is 72 kg. If the skaters push away from each other without spinning,
- A.
  
  The lighter skater has less momentum.
- B.
  
  Their momenta are equal but opposite.
- C.
  
  Their total momentum doubles.
- D.
  
  Their total momentum decreases.
3.

In a two-body collision,
- A.
  
  Momentum is always conserved.
- B.
  
  Kinetic energy is always conserved.
- C.
  
  Neither momentum nor kinetic energy is conserved.
- D.
  
  Both momentum and kinetic energy are always conserved.
4.

A person sitting in a chair with wheels stands up, causing the chair to roll backward across the floor. The momentum of the chair
- A.
  
  Was zero while stationary and increased when the person stood.
- B.
  
  Was greatest while the person sat in the chair.
- C.
  
  Remained the same.
- D.
  
  Was zero when the person got out of the chair and increased while the person sat.
5.

Two swimmers relax close together on air mattresses in a pool. One swimmer’s mass is 48 kg, and the other’s mass is 55 kg. If the swimmers push away from each other,
- A.
  
  Their total momentum triples.
- B.
  
  Their momenta are equal but opposite.
- C.
  
  Their total momentum doubles.
- D.
  
  Their total momentum decreases.
6.

A 75 kg person walking around a corner bumped into an 80 kg person who was running around the same corner. The momentum of the 80 kg person
- A.
  
  Increased.
- B.
  
  Remained the same.
- C.
  
  Decreased.
- D.
  
  Was conserved.
7.

The law of conservation of momentum states that
- A.
  
  The total initial momentum of all objects interacting with one another usually equals the total final momentum.
- B.
  
  The total initial momentum of all objects interacting with one another does not equal the total final momentum.
- C.
  
  The total momentum of all objects interacting with one another is zero.
- D.
  
  The total momentum of all objects interacting with one another remains constant regardless of the nature of the forces between the objects.
8.

When two ice skaters initially at rest push off one another, their final momenta are
- A.
  
  Equal in magnitude and direction.
- B.
  
  Equal in magnitude and opposite in direction.
- C.
  
  In the same direction but of different magnitudes
- D.
  
  In opposite directions and possibly of different magnitudes.
9.

When two objects interact in an isolated system,
- A.
  
  The momentum of each object is conserved.
- B.
  
  The total momentum of the system is zero.
- C.
  
  The total momentum is conserved only if the objects move in opposite directions.
- D.
  
  The total momentum is always conserved.
10.

Conservation of momentum follows from
- A.
  
  Newton’s first law.
- B.
  
  Newton’s second law.
- C.
  
  Newton’s third law.
- D.
  
  The law of conservation of energy.
11.

A 6.0 x 10^-² kg tennis ball moves at a velocity of 12 m/s. The ball is struck by a racket, causing it to rebound in the opposite direction at a speed of 18 m/s. What is the change in the ball’s momentum?
- A.
  
  0.36 kg*m/s
- B.
  
  0 kg*m/s
- C.
  
  0.036 kg*m/s
- D.
  
  1.8 kg*m/s
12.

A student stumbles backward off a dock and lands in a small boat. The student isn't hurt, but the boat drifts away from the dock with a velocity of 0.85 m/s to the west. If the boat and student each have a mass of 68 kg, what is the student’s initial horizontal velocity?
- A.
  
  0 m/s
- B.
  
  57.8 m/s
- C.
  
  0.85 m/s
- D.
  
  1.7 m/s
13.

A 20.0 kg cannonball is fired from a 2.40 x 10³ kg. If the cannon recoils with a velocity of 3.5 m/s backwards, what is the velocity of the cannonball?
- A.
  
  420 m/s
- B.
  
  48,000 m/s
- C.
  
  9.81 m/s
- D.
  
  137 m/s
14.

A 50.0 g shell fired from a 3.00 kg rifle has a speed of 400.0 m/s. With what speed does the rifle recoil in the opposite direction?
- A.
  
  6.67 m/s
- B.
  
  6666.67 m/s
- C.
  
  21200 m/s
- D.
  
  1220 m/s