A Rock Is Kicked Horizontally at a Speed of 15

Multiple Choice

A rock is kicked horizontally at a speed of 15 m/s from the edge of a cliff. The rock strikes the ground 65 m from the foot of the cliff of height H as suggested in the figure, which is not drawn to scale. Neglect air resistance.

-What is the approximate value of H, the height of the cliff?

A) 27 m
B) 54 m
C) 78 m
D) 150m
E) 300 m