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Physics

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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?

  • Physics -

    That is just the previous problem worked backwards with different numbers.

  • Physics -

    Not sure. I need help too*-)

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