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18. A 34.5 kg box initially at rest is pushed 5.75 m along a rough, horizontal...

18.

A 34.5 kg box initially at rest is pushed 5.75 m along a rough, horizontal floor with a constant applied horizontal force of 150 N. If the coefficient of friction between box and floor is 0.300, find the following.

(a) the work done by the applied force
___J
(b) the increase in internal energy in the box-floor system due to friction
___J
(c) the work done by the normal force
___J
(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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