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January 26, 2015

January 26, 2015

Posted by **ashley** on Sunday, June 2, 2013 at 10:35am.

- physics -
**MathMate**, Sunday, June 2, 2013 at 11:56amHint:

Calculate the time it takes to reach the lower roof, say t (in seconds), by solving for t in:

(100-25)=(1/2)gt²

The minimum horizontal velocity will be 20/t m/s

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