Kinetic Friction – Introductory Physics: Classical Mechanics
http://go.microsoft.com/fwlink/?LinkID=617350
WEBBecause our law of friction is only valid for objets that are actively rubbing against each other, we refer to it as kinetic friction, and we place a “k” subscript in the frictional coefficient . With this understanding, we now assert that this is how friction works, and promote it to a law of physics. As such, it goes in our tablets!
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