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September 20, 2014

September 20, 2014

Posted by **JJ** on Friday, September 16, 2011 at 2:26pm.

- Physics -
**Henry**, Sunday, September 18, 2011 at 5:15pmVf = Vo + gt,

Vo = Vf - gt,

Vo = 0 - (-9.8)3 = 29.4m/s.

h = 106 + (Vf^2 - Vo^2) / 2g,

h=106 + (0 - (29.4)^2) / -19.6=150.1m

above ground.

d = Vo*t + 4.9t^2 = 150.1m,

0 + 4.9t^2 = 150.1,

t^2 = 30.63,

t(dn) = 5.53s,

T = t(up) + t(dn) = 3 + 5.53 = 8.53s in flight.

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