Question

On basis of modern concept,write the cause of friction.​

Answer 1

Explanation:

Consider a particle which has mass ‘m’ and is moving with a uniform velocity.

this particle is moving along a certain surface of ROUGH texture. so now, when the lower surface of the particle comes in contact with the upper surface of the floor / ground, the particle loses some of its velocity because the roughness of the surface stops it from going ahead. since to overcome this force of opposition, the particle spends some of its energy. and this produces heat.