Question: 1. Consider a head-on collision between two identical billiard balls. Ball 1 is initially in motion toward ball 2, which is initially at rest. After

1. Consider a head-on collision between two identical billiard balls. Ball 1 is initially in motion toward ball 2, which is initially at rest. After the collision, ball2 departs with the same velocity that ball 1 originally had. Disregard any friction between the balls and the surface. What happens to ball 1? What happens to ball 2? What happen to their momentum and kinetic energy?
2. Sketch a position vs. time graph for Question 1, starting with the time before the collision starts and ending a short time after the collision.
3. Sketch a velocity vs. time graph for Question 1, starting with the time before the collision starts and ending a short time after the collision.
4. Based on your graphs, is momentum conserved in this collision? Is kinetic energy conserved?

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