CHECKPOINTS (continued) 10. A billiard ball collides with an identical stationary billiard ball. Assuming that the
collision is elastic, which of the following is true of the ball that was originally
stationary?
O a. It moves in the opposite direction as the ball that collided with it, and it has
half the velocity.
Ob. It moves in the same direction and with the same velocity as the ball that
collided with it.
O c. It remains stationary.