Friction is the force that opposes the motion of an object when the object is in contact with another object or surface. Friction results from two surfaces rubbing against each other, it can slow the motion of an object or completely prevent an object from moving at all. Without friction, my favorite sport, Supercross, would be impossible. Supercross is indoor dirtbike racing, over a course that is riddled with jumps, whoops and sharp, almost 360 degree, …showed first 75 words of 375 total…

…showed last 75 words of 375 total…