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A ball of clay falls to the hard floor. ...

A ball of clay falls to the hard floor. It does not bounce noticeably, and it very quickly comes to rest. What , then has happened to the energy the ball had while it was falling?

A

It has been used up in producing the downward motion.

B

It has been transformed back into potential energy

C

It has been transformed into the ball by heat.

D

it is in the ball and floor (and wall) as energy of invisible molecular motion.

Text Solution

Verified by Experts

The correct Answer is:
D
The energy is internal energy .Energy is never `''used up''` The ball finally has no elevation and no compression , so the ball - earth system has no potential energy stop there is no stove , so no energy is pu in by heat .The amount of energy transferred away by sound is minuscule.
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