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Word Count: 373
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 turns Friction helps people convert one form of motion into another For example when people walk friction allows them to convert a push backward along the ground into forward motion Similarly when Jeremy McGraths1 dirtbike tires push backward along the ground friction with the ground makes the tires roll forward to a stunning victory over his competitors Friction also causes the painful injuries that Seth Enslow 2 faces when he crashes his bike off of a two hundred and fifty-foot sand dune and slides to a stop Sliding friction occurs when a wheel ball or cylinder rolls freely over a surface this is the friction that keeps Supercross races packed with action and moving bikes Static friction in contrast acts between surfaces at rest Static friction is the friction that riders must overcome at the start of each race to win the Holeshot Award3 Friction it seems has good and bad parts about it Good when it is keeping the bikes up right and moving but bad when someone falls and slides along the dirt As much as my favorite riders may hate friction when they hit the dirt or pavement that they are riding on without friction they wouldnt be able to ride at all I think that the Supercross riders may be able to improve their standings if they all took a good look at the effects of friction 1Seven time 250cc EA Sports Supercross Champion the undisputed King of Supercross 2Madman on
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