The acceleration due to the Earth's gravity, in English units, is 32 ft/s2. In the absence of air friction, a ball is dropped from rest. Its speed on striking the ground is exactly 60 miles/hr. For what time interval was the ball falling?

Question

I am unsure how to set this up to solve :(

Answer 1

V = 60mi/hr * 5280Ft/mi * 1hr/3600s = 88 Ft/s.

V = Vo + g*t,
88 = 0 + 32*t,
t = ?

Answer 2

t=2.75

Answer 3

t = 2.75 s. is correct.