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August 4, 2015

Homework Help: Physics

Posted by Kaleigh on Saturday, January 28, 2012 at 11:46pm.

A ball is thrown straight up from the ground
with an initial velocity of 30.4 m/s; at the
same instant, a ball is dropped from the roof
of a building 21.1 m high.
After how long will the balls be at the
same height? The acceleration of gravity is
10 m/s2.
Answer in units of s

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