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February 27, 2015

February 27, 2015

Posted by **Steven** on Friday, November 14, 2008 at 5:53pm.

- PHYSICS -
**Damon**, Friday, November 14, 2008 at 6:44pmsince it ends up at the same spot, it goes one way for the same time and distance that it goes the other way. Therefore find half the time and double it.

0 = Vo + a t

so a t = -Vo

Vo = +21 m/s (by symmetry)

so

- 3.8 t = -21

t = 21/3.8

we want 2t = 42/3.8

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