Answers

2016-06-19T18:01:07+08:00
The force resisting the relative motion of solid surfaces, fluid layers,and materials elements sliding against each other.
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2016-06-19T18:08:55+08:00
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction resists relative lateral motion of two solid surfaces in contact.
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