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January 25, 2015

January 25, 2015

Posted by **Trisha** on Tuesday, May 28, 2013 at 10:48pm.

- Physics -
**Elena**, Wednesday, May 29, 2013 at 4:25amh=v₀t+gt²/2

gt²+2 v₀t-2h=0

10 t²+3.4t-90 =0

t= {- 3.4ħsqrt(11.56+3600)}/20=

= { - 3.4 ħ 60.1}/20

t = 2.83 s

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