Question

state type of friction .whar are the cause of friction

Answer 1

Friction is a force that resists the relative motion between two objects or materials. The causes of this resistive force are molecular adhesion, surface roughness, and deformations. Adhesion is the molecular force resulting when two materials are brought into close contact with each other.

Answer 2

static,sliding,rolling,fluid are the types of friction
surface roughness and deformations are causes of friction