Physics::Linear Momentum and Collisions

1. What is the definition of momentum?
A) The product of an object's mass and acceleration.
B) The product of an object's mass and velocity.
C) The energy of an object in motion.
D) The force exerted by an object in motion.

2. What happens to the momentum of a closed system during a collision?
A) It increases.
B) It decreases.
C) It remains constant.
D) It becomes zero.

3. In an elastic collision, which of the following statements is true?
A) Total momentum is conserved, but total kinetic energy is not.
B) Both total momentum and total kinetic energy are conserved.
C) Total momentum is not conserved, but total kinetic energy is.
D) Neither total momentum nor total kinetic energy is conserved.

4. During an inelastic collision, the two colliding objects:
A) stick together after the collision.
B) bounce off each other with no change in speed.
C) lose kinetic energy but do not lose momentum.
D) can have the same speed after the collision.

5. If a truck (3000 kg) collides with a car (1500 kg) and comes to a complete stop, what happens to the momentum of the system?
A) It decreases.
B) It remains unchanged.
C) It increases.
D) It becomes zero.

6. Which of the following correctly depicts a perfect inelastic collision?
A) Objects bounce off each other and move apart.
B) Objects stick together and move as one mass after the collision.
C) Objects collide and stick momentarily but separate afterward.
D) Objects pass through one another without interacting.

7. If the momentum of an object is doubled, what happens to its velocity if its mass remains constant?
A) The velocity halves.
B) The velocity stays the same.
C) The velocity doubles.
D) The velocity quadruples.

8. When two objects collide and stick together, which of the following is true?
A) Total momentum is conserved, total kinetic energy is lost.
B) Total momentum is lost, total kinetic energy is conserved.
C) Total momentum is not conserved, total kinetic energy is conserved.
D) Total momentum remains the same, while kinetic energy increases.