Question

what is the meaning of friction ​

Answer 1

the resistance that one surface or object encounters when moving over another.

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Answer 2

Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces .

Advantages of Friction:

1. Friction is responsible for many types of motion.
2. It helps us walk on the ground.
3. Brakes in a car make use of friction to stop the car.
4. Asteroids are burnt in the atmosphere before reaching Earth due to friction.
5. It helps in the generation of heat when we rub our hands.