Homework Help: AP Physics

Posted by Corey on Thursday, November 13, 2008 at 10:00pm.

A person jumps from the roof of a house 3.0 m high. When he strikes the ground below, he bends his knees so that his torso decelerates over an approximate distance of 0.60 m. The mass of his torso (excluding legs) is 48 kg.

*How do I find the average force exerted on his legs by his torso during deceleration?

AP Physics - bobpursley, Thursday, November 13, 2008 at 10:01pm
force*distance=mgh
workdoneinabsorbind enery=energyfromfall

solve for force.
- AP Physics - Corey, Thursday, November 13, 2008 at 10:04pm
  but i solved for the force and it did not come out as the right anser i did Fd=mgh then said F(.6)=(48)(9.8)(3) but its wrong???
AP Physics - bobpursley, Thursday, November 13, 2008 at 10:24pm
I dont know. Do you think it means on each leg individually?
AP Physics - lolo, Thursday, November 3, 2011 at 1:40pm
hi can u help me in my home work

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