Homework Help: physical science

Posted by Fonda on Thursday, December 15, 2011 at 7:57pm.

A 1 kg object requires 10 N of force to lift it 5 m from the bottom of a well. (use g = 10 m/s2)
What is the kinetic energy when the object has fallen halfway down the well (2.5m)?

physical science - bobpursley, Thursday, December 15, 2011 at 8:04pm
PEchange=KE change
mgh-mg(h/2)=KE
solve for KE

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