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December 20, 2014

December 20, 2014

Posted by **Sev** on Thursday, February 14, 2013 at 1:33am.

Calculate the velocity with which the calculator will hit the ground.

- Physics -
**drwls**, Thursday, February 14, 2013 at 1:59amFor an easy solution, use conservation of energy.

Vo = 42 m/s

Vf = final velocity

M ='mass

H ='rooftop height

MgH + (M/2)Vo^2 = (M/2)Vf^2

Cancel out the M and solve for Vf

Vf^2 = Vo^2 + 2 g H

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