Question

What is friction?What do they function?​

Answer 1

Answer:

Friction, force that resists the sliding or rolling of one solid object over another. Frictional forces, such as the traction needed to walk without slipping, may be beneficial, but they also present a great measure of opposition to motion.

Explanation:

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Answer 2

Answer:

friction opposes the relative motion between two surfaces in contact. it acts on both the surfaces.