what is friction ?
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- Friction is a force between two surfaces that are sliding, or trying to slide, across each other. ... Friction always works in the direction opposite to the direction in which the object is moving, or trying to move. Friction always slows a moving object down.
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Friction is a force that opposes motion between any surfaces that are touching. Friction can work for or against us. For the different direction of motion, we can say that, If force is applied to an object in the direction of motion, it speeds up.
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