Question

WHAT IS FRICTION
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Answer 1

Answer:

Friction is a force that tries to oppose motion between the two surfaces in placed contact. When we throw a ball on the floor it starts moving with some velocity. But once it is rolled ideally no force is acting in the direction of motion and according to Newton’s first law the ball should keep on rolling but this does not happen. The ball stops after moving certain distance so a force must be acting on it. That force is known as friction.

Answer 2

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Friction

Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism.

Formula

Friction force

f = uN

f = friction force

u = coefficient of friction

N = normal force

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