Question

1. Define the term friction? Write its S.I unit.

Answer 1

Answer:

A force which resist the motion of the body is called friction. SI unit of friction is Newton

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Answer 2

Explanation: The force that resists motion of a body is called friction . It produces heat . For example----in winters when we rub our hands against each other ( motion ) , it produces friction which produces heat . It is due to force of friction that when we apply brakes in cars , the tyres are able to stop .

As it is a kind of force , it's SI unit is that of force i e ---- Newtons.                                      hope it will help you.