A student drops a rock from a bridge to the water 12.0 meters below. With what speed does the rock hit the water?

Answer 1

V^2 = Vo^2 + 2g*h.
Vo = 0.
g = 9.8 m/s^2.
h = 12 m.
V = ?.

Answer 2

15.2

Answer 3

1.6s