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September 20, 2014

September 20, 2014

Posted by **flay** on Wednesday, January 9, 2013 at 7:50am.

- physics -
**bobpursley**, Wednesday, January 9, 2013 at 8:32amobject 1: h=80-1/2 g t^2

object 2: h=vi*t-1/2 g t^2

set them equal.

vi*t=80

solve for vi

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