Question

what do you mean by friction ​

Answer 1

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A force on objects or substances in contact with each other that resists motion of the objects or substances relative to each other is known as Friction.

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Answer 2

Answer:

Friction is the force that opposes the relative motion between the two surfaces of objects in contact. The force of friction always acts in the direction opposite to that of the applied force.

Examples:

1. Rubbing hands is a friction which produces heat.

2. A bullet fired from a gun will slow down due to gravity and friction with the air.