Question

If a ball is dropped from from 288 ft above the ground, how long does it take to reach ground level?

Answer 1

The distance S for a free falling object from rest over t seconds is:
S=(1/2)gt²
where
g=9.8 m.s^-2
S=288m
Solve for t.
solve for t.

Answer 2

Be cautious about units on this problem. The problem gives the distance in feet. Gravitational acceleration in English units is about 32 ft/sec^2 .

Answer 3

Oops. Use g=32.2 f s^-2
Thanks Qudditch.