Question

what are the causes of friction
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Answer 1

Answer:

Friction is a force that resists the relative motion between two objects or materials. The causes of this resistive force are molecular adhesion, surface roughness, and deformations. Adhesion is the molecular force resulting when two materials are brought into close contact with each other.S

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Answer 2

Answer:

friction is caused by interlocking of irregularities in the surfaces of the two objects which are in contact with each other