Posted by Gina on Thursday, August 26, 2010 at 9:56pm.
If a ball is dropped from from 288 ft above the ground, how long does it take to reach ground level?

math  MathMate, Thursday, August 26, 2010 at 10:26pm
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.

math  Quidditch, Thursday, August 26, 2010 at 10:53pm
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 .

math  MathMate, Thursday, August 26, 2010 at 11:33pm
Oops. Use g=32.2 f s^{2}
Thanks Qudditch.
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