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December 22, 2014

December 22, 2014

Posted by **Joe** on Tuesday, January 12, 2010 at 8:41pm.

for this I keep on getting 432.5 J but the back of the book tells me that the answer is 352 J and I do not see how to get this answer

I did the PE at the the top of the slide minus the KE at the bottom and got 432.5 J apparently I'm doing soemthing wrong thanks

- Physics -
**bobpursley**, Tuesday, January 12, 2010 at 8:47pmfriction=mgh-1/2 m v^2

= m(gh-.5 v^2)=16(9.8*2.5-.5*2.25^2)

=352 Joules

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