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September 20, 2014

September 20, 2014

Posted by **mt** on Thursday, May 2, 2013 at 12:35pm.

- physics -
**Henry**, Saturday, May 4, 2013 at 7:42pmh = ho + (V^2-Vo^2)/2g

h = 14.7 + (0-(7.53)^2)/-19.6 = 17.6 m.

Above gnd.

V^2 = Vo^2 + 2g*h

V^2 = 0 + 19.6*17.6 = 345

V = 18.6 m/s.

V = Vo + g*t

Tr = (V-Vo)/g = (0-7.53)/-9.8=0.768 s.=

Rise time.

h = Vo*t + 0.5g*t^2 = 17.6 m.

0 + 4.9t^2 = 17.6

t^2 = 3.59

Tf = 1.89 s. = Fall time.

T = Tr + Tf = 0.768 + 1.89 = 2.66 s. =

Time in air.

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