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 energy and potential energy are equal.
D)all of the above
E)none of the above

Question

Quizplus · Accepted Answer

When the circus diver is halfway down, his potential energy has decreased by half since he is now at a lower height. As a result, his potential energy has been converted into kinetic energy. According to the law of conservation of energy, the total energy remains constant, so at halfway down, the kinetic energy and potential energy are equal. Therefore, all the choices (A), (B), and (C) are correct.

A Circus Diver Drops from a High Pole into Water