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September 20, 2014

September 20, 2014

Posted by **emilia** on Sunday, April 15, 2012 at 12:15pm.

- intro. to physics -
**Elena**, Sunday, April 15, 2012 at 1:06pmh=v(o) •t +gt^2/2,

g•t^2 +2•v(o) •t -2•h•= 0,

9.8•t^2 +2•5.2 •t -2•100= 0,

t = {-10.4 ±sqrt[(10.4)^2+4•9.8•200]}/2•9.8.

t = 4.01 s

- intro. to physics -
**Elena**, Sunday, April 15, 2012 at 3:25pmh=v(o) •t +gt^2/2,

g•t^2 +2•v(o) •t -2•h•= 0,

9.8•t^2 +2•5.2 •t -2•100= 0,

t = {-10.4 ±sqrt[(10.4)^2+4•9.8•200]}/2•9.8.

t = 4.01 s

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