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December 21, 2014

December 21, 2014

Posted by **David** on Wednesday, June 25, 2014 at 6:12am.

- Physics -
**MathMate**, Wednesday, June 25, 2014 at 6:47amUse kinematics equation:

Δx = vi(t) + (1/2)at²

vi=0

g=-9.8

-500=(1/2)(-9.8)t²

t=√(2(-500)/(-9.8))

=10.1 s (approximately)

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