A puck traveling at 6 m/s in the + x direction hits a wall and bounces back. Right after the collision with the wall, it is traveling in the -x-direction at 6 m/s.

What type of collision occurred? (Assume the wall does not move)

a. Elastic

b. Inelastic

c. There is as yet insufficient data for a meaningful answer

2. Two pucks collide with each other. After the collision, they do not stick together. Is kinetic energy conserved in the collision?

a. Elastic

b. Inelastic

c. There is as yet insufficient data for a meaningful answer