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 (due to one or both moving), friction acts. There are different types like static friction (when objects are at rest relative to each other but an attempt to move is made) and kinetic (or sliding) friction (when objects are in motion relative to each other). The description in the question aligns with the concept of friction.

Answer:

friction