ocr: FRICTION FORCE PULLING FORCE - - - - - - 00o 009 4D FRICIION FORCE Friction is a force that resists motion. Ith happens because the particles oft - two surfaces in contact attract one another. Tor move the surtaces past each other, this attraction must be overcome. The amount offriction depends upon what the surfaces are made of and how hard theyare pressed together. Friction often converts some ofthe energy you put into a task into heat.
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