You have a new tennis and are standing next to a steeply sloping bank of road. D

Question

You have a new tennis and are standing next to a steeply sloping bank of road. Directly in front of you is the opening of a culvert, a large 1 m diameter drain pipe, that extends up and into the bank in front of you. You throw the ball up into the culvert. It comes back out faster than you threw it in. This is due to:

A) the action of gravity, converting PEg to KE

B) the culvert sloping upward more steeply inside than the part you see

C)the ball being new and bouncing several times, gaining KE at each bounce

D) someone hiding inside the culvert who caught the ball and then threw it back at you

E) the ball bouncing directly back off an unseen wall of the culvert to some PEelastic is also converted to KE

Explanation / Answer

C)(m)(a) for a leaf as it falls to the ground

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