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April 21, 2014

April 21, 2014

Posted by **dan** on Thursday, May 10, 2012 at 11:48am.

Ace raised a 14.0-N physics book from a table 72 cm above the floor to a shelf, 2.20 m above the floor. What was the change in potential energy?

- Physics -
**Elena**, Thursday, May 10, 2012 at 4:48pmΔPE = m•g•ΔH =14•(2.2-0.72) = 20.72 J

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