Free fall Problems

Question

A rock is dropped from a height of 43.5 ft. How fast is it moving when it hits the ground, and how far did it fall?

Answer 1

Vf² = Vi² +2gH

Plug in

Vi = 0 , Vf =?

g= 32 ft/s2

Vf²= 2*32*43.5 =2784

Vf = 52.76 ft/s

For time

t = 52.76/32 Sec