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November 28, 2014

November 28, 2014

Posted by **Anonymous** on Thursday, September 6, 2012 at 12:11am.

- engineering -
**Henry**, Friday, September 7, 2012 at 7:13pmV^2 = Vo^2 + 2g*d.

V^2 = 0 + 19.6*39 = 764.4

V = 27.65 m/s.

d = Vo*t + 0.5g*t^2 = 30 m.

27.65t + 4.9t^2 = 30

4.9t^2 + 27.65t - 30 = 0

Use Quadratic Formula and get:

Tf = 0.931 s. = Fall time.

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