Work Done By a Constant Force and By Friction, Net Work Calculations, Physics Problems

This physics video tutorial explains how to calculate the work done by a constant force and how to calculate the work done by friction. In addition, it discusses how to calculate the net work done on an object. Whenever the force and displacement vector are parallel to each other, the work done on an object is positive which causes the speed and kinetic energy of the object to increase. If the force and displacement vectors are perpendicular, no work is done and the object's kinetic energy remains constant. The work done by friction is usually negative since the kinetic friction force vector is antiparallel to an object's displacement. This video contains plenty of examples and practice problems.

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Work Done By a Constant Force and By Friction, Net Work Calculations, Physics Problems workday
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Education	Upload TimePublished on 28 Sep 2017

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