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April 21, 2014

Homework Help: Physics

Posted by Amy on Monday, February 13, 2012 at 11:04pm.

A 55-kg block, starting from rest, is pushed a distance of 5.0 m across a floor by a horizontal force Fp whose magnitude is 140 N. Fp is parallel to the displacement of the block. The final speed of the block is 2.35 m/s.
A) What work did the friction do on the box?
B) What is the coefficient of friction?

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