Question

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the force exerted on one surface by a second surface when the two surfaces rub against each other because one or both of the surfaces are moving is called

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Explanation:

Friction is the force that opposes the relative motion between two surfaces in contact. When surfaces rub against each other (either one or both moving), friction comes into play. Kinetic friction specifically refers to the friction force when the surfaces are in motion relative to each other.

Answer:

kinetic friction