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?
2 answers
That is just the previous problem worked backwards with different numbers.
Not sure. I need help too*-)