Potential energy is gained by a body when it does work against
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The energy gained by a body due to a change in its height is known as _________.
A circus diver drops from a high pole into water far below. When he is halfway down ______.
A) his potential energy is halved
B) he has gained an amount of kinetic energy equal to half his initial potential energy
C) his kinetic and potential energies are equal
D) all of the above
E) none of the above