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April 18, 2014

Homework Help: Physics

Posted by Andrea on Wednesday, October 17, 2007 at 5:38pm.

A ball falls from the top of a building . through the air(air resistance is present) to the ground below. How does the KE just before hitting the ground compare to the PE at the top of the building?

Isn't KE and PE equal to each other in this situation? Since I believe energey is conserved.

A ball droped some distance gains 30 J of Ke. Don't ignore air resistance. How much GPE did the ball lose?

Wouldn't the ball lose 30 J of gravitational potential energy?

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