Question

Define friction. Why is frictional force termed as a contact force?

Answer 1

Answer:

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.The force which always opposes the motion of one body over another body frictional force. It acts between the two surfaces which are in contact with each other. ... Since frictional force arises when the surface of two objects are in touch with each other ,therefore, frictional force is an example of contact