I am having real trouble understanding friction force. Work I understand. I just don't know how to put them together. Some help would be highly appreciated.(adsbygoogle = window.adsbygoogle || []).push({});

A 16.1 kg block is dragged over a rough, horizontal surface by a constant force of 118 N acting at an angle of 25 degrees above the horizontal. The block is displaced 78.6 m, and the coeficient of kinetic friction is 0.228. The acceleration of gravity is 9.8 m/s2.

a.) Find the work done by the 118 N force. Answer in units of J. - I've already found this to be 8405.82346 J

b.) Find the work done by the force of friction. Answer in units of J.

c.) If the block was originally at rest, determine its final speed. Answer in units of m/s2.

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# Homework Help: Work and Friction

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