FRICTION - is an everyday force created by to surface by two surfaces interacting, FORCES - are pushes or pulls that act in a specific direction, GRAVITY - cause all object to fall towards the ground, STATIC FRICTION - acts when the object rests on a surface, SLIDING FRICTION - acts when an object slides on a surface, ROLLING FRICTION - acts when an object is rolling on a solid surface, FLUID FRICTION - occurs when an object is moving through fluid, either liquids or air,

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