Question

what is friction explain with an example
for 5 marks questions please explain this​

Answer 1

Answer:

Friction acts as a resisting force which is generated , when two solid surfaces slide against one another. Examples :- <> For walking , there is a friction between our shoes / feet . <>There is a friction between the tires of a vehicle and between the road.

Answer 2

Explanation:

Friction is a force that opposes the motion of an object by being in contact with it.

example: the break in a train engine. It consists of a piece of metal that is pressed (contact) to the rolling wheel to create a resistance to the movement, and thus, ultimately, bringing the convoy to a stop. Recall that the definition of mechanical force is F= m × a (force equals mass multiplied by the acceleration given to such a given mass). In a brake, because the friction is diminishing the velocity of the vehicle, i.e. de-accelerating it, the expression will be F= m × (-a) or -F = m × a.

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