A trapeze artist, starting from rest, swings downward on the bar, lets go at the

Question

A trapeze artist, starting from rest, swings downward on the bar, lets go at the bottom of the swing, and falls freely to the net. An assistant, standing on the same platform as the trapeze artist, jumps from rest straight downward. Friction and air resistance are negligible.

(a) On which person, if either, does gravity do the greatest amount of work?

Gravity does the most work on whichever person is more massive.

Gravity does the most work on the assistant.    

Gravity does the most work on whichever person traveled the greater distance.

Gravity does the most work on the trapeze artist.

(b) Who, if either, strikes the net with a greater speed?

The more massive person strikes the net with a greater speed.

They both strike the net with the same speed.    

The trapeze artist strikes the net with a greater speed.

The assistant strikes the net with a greater speed.

Explanation / Answer

a) Gravity does the most work on whichever person is more massive.

b) They both strike the net with the same speed.

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