Saturday

April 19, 2014

April 19, 2014

Posted by **Lea** on Sunday, September 30, 2012 at 12:29pm.

- Physics -
**Henry**, Monday, October 1, 2012 at 5:30pmTr = (V-Vo)/g = (0-22)/-9.8 = 2.24 s. =

Rise time.

hmax = ho + Vo*t + 0.5g*t^2.

hmax = 2 + 22*2.24 - 4.9*(2.24)^2 = 26.7m. Above gnd.

hmax = Vo*t + 0.5g*t^2 = 26.26.7m.

0 + 4.9t^2 = 26.7

4.9t^2 - 26.7 = 0.

Use Quadratic Formula:

Tf = 2.33 s. = Fall time.

Tr + Tf = 2.24 + 2.33 = 4.57 s. = Time

in air.

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