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A 55-kg block, starting from rest, is pushed a distance of 5.0m across a floor by a horizontal force Fp whose magnitude is 140N. Fp is parallel to the displacement of the block. The final speed of the block is 2.35m/s.

a. How much work was converted to thermal energy? What work did friction do on the box?

b. What is the coefficient of friction?

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i don't know...help

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