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AP® Physics C: Mechanics

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Momentum and Collisions: Head-on Collision Truths

APPHMC-Z4GHSS

Two identical objects move towards each other with different speeds.

After a head-on collision, which of the following MUST be true?

A

The objects stick together.

B

The objects both move in the same direction as each other after the collision.

C

The direction of the net momentum after the collision must be opposite from the direction of the net momentum before the collision.

D

The direction of the net momentum after the collision must be the same as the direction of the net momentum before the collision.

E

Kinetic energy is not conserved.