Question 5: What is the change in velocity of the rubber ball from just before its collision with the ground to just after its collision with the ground?
Question 6: For the clay ball, its speed just before its collision with the ground is v = −2gh by the kinematic equations. What is its speed just after its collision with the ground? Explain how you know.
Question 7: What is the change in velocity of the clay ball from just before its collision with the ground to just after its collision with the ground?
Question 8: One of these collisions we call "perfectly elastic" and the other we call "perfectly inelastic". Based on your answers to the above questions, which ball corresponds to which collision? Why?