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Define friction force.

Sagot :

Final answer:

Friction is a force that opposes motion between surfaces, converting kinetic energy into heat.


Explanation:

Friction is a force that opposes the motion of an object in contact with a surface, acting parallel to the surface. It is the resistance encountered when two surfaces try to slide against each other, converting kinetic energy into heat. Friction enables gripping, walking, and controlling speed, but also causes wear and tear.


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