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April 18, 2014

April 18, 2014

Posted by **joseph** on Friday, September 21, 2012 at 12:25am.

- physics -
**Henry**, Saturday, September 22, 2012 at 8:32pmTr=(Y-Yo)/g = (0-14sin30)/9.8 = 0.71 s.

Range = Xo*(Tr+Tf) = 42 m.

14*cos30*(0.71+Tf) = 42

12.12*(0.71+Tf) = 42

8.61 + 12.12Tf = 42

12.12Tf = 42 - 8.61 = 33.39

Tf = 2.75 s.

h = Vo*t + 0.5g*t^2.

h = 0 + 4.9*2.75^2 = 37.1 m.

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