Asked by Gina

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

Answers

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

Answered by MathMate
Oops. Use g=32.2 f s<sup>-2</sup>
Thanks Qudditch.
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