Answers

2016-01-10T15:11:34+08:00
Friction is the force opposes the motion of an object.
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2016-01-10T15:28:37+08:00
Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces.
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