# Question

A 0.20-kg object with a horizontal speed of hits a wall and bounces directly back with only half the original speed.

(a) What percentage of the object’s initial kinetic energy is lost: (1) 25%, (2) 50%, or (3) 75%?

(b) How much kinetic energy is lost in the ball’s collision with the wall?

(a) What percentage of the object’s initial kinetic energy is lost: (1) 25%, (2) 50%, or (3) 75%?

(b) How much kinetic energy is lost in the ball’s collision with the wall?

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