Question

what is friction? explain it properly​

Answer 1

Explanation:

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. That force is known as friction. So we tend to develop a common definition that frictional force tends to oppose the motion.

Answer 2

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Hola mate,

Here is your answer.. :)

              Friction is a force that holds back the movement of a sliding object.

Explanation:

        Friction is the resistance of motion when one object rubs against another. Anytime two objects rub against each other, they cause friction. Friction works against the motion and acts in the opposite direction. When one object is sliding on another it starts to slow down due to friction.