A rock is dropped from a high tower and falls freely under the influence of grav

Question

A rock is dropped from a high tower and falls freely under the influence of gravity. Which one(s) of the following statements is true concerning the rock as it falls? There could be more than one.

A. It will gain an equal amount of kinetic energy for each meter through which it falls.
B. It will gain an equal amount of momentum during each second.
C. It will gain an equal amount of momentum for each meter through which it falls.
D. It will gain an equal amount of kinetic energy during each second.

Explanation / Answer

since the velocity of the rock increases steadily with time

momentum is p =m*v

kinetic energy is KE = 0.5*m*v^2

hence

the answers are

B) and

D)

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