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December 20, 2014

December 20, 2014

Posted by **tiana** on Tuesday, September 25, 2012 at 10:30pm.

- physics -
**Elena**, Wednesday, September 26, 2012 at 2:42pm(v1+v2)t=s

t=s/(v1+v2)=2.71/170=0.016 h= 57.4 s.

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