Question

what is friction?

grade 8
chapter:friction​

Answer 1

Answer:

Friction is a force between two surfaces that are sliding, or trying to slide, across each other. For example, when you try to push a book along the floor, friction makes this difficult. Friction always works in the direction opposite to the direction in which the object is moving, or trying to move.

Explanation:

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Answer 2

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Friction is a force that opposes the relative motion between two surfaces in contact. It acts on both the surfaces. You might have heard about the ball bearings. They are used in many machines and tyres so as to reduce friction.

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