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Physics 6 Online
OpenStudy (anonymous):

A 15.5kg block is dragged over a rough, horizontal surface by a constant force of 96.7 N acting at an angle of 28.1degrees above the horizontal. The block is displaced 19m and the coefficient of kinetic friction is 0.162. The acceleration of gravity is 9.8m/s^2. Find the magnitude of the work done by the force of friction.

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