Question

A 40.5 kg box initially at rest is pushed 4.40 m along a rough, horizontal floor with a constant applied horizontal force of 125 N. If the coefficient of friction between box and floor is 0.300, find the following.

(d) the work done by the gravitational force
 J

(e) the change in kinetic energy of the box
 J

(f) the final speed of the box
 m/s

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Tagged in
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Work,Power and Energy

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