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August 22, 2014

August 22, 2014

Posted by **risha** on Wednesday, October 20, 2010 at 11:49pm.

- physics -
**drwls**, Thursday, October 21, 2010 at 1:39amFirst calculate the person's velocity when the feet hit the ground.

V = sqrt(2gH) To decelerate to zero velocity while the center of mass moves a distance X requires a deceleration rate (a) that is given by the formula

V = sqrt(2aX)

The two equations can be combined to give:

a = V^2/2X = 2gH/2X = g*H/X

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