Question

state the likely cause of friction?

Answer 1

Answer:

Friction is caused due to irregularities on the surfaces of objects in contact.If we carefully observe the surface of objects through magnifying lens we will see that there are tiny hills and grooves.

When two surfaces come in contact with each other these hills and grooves interlock with one another and thus oppose motion.

Answer 2

Answer:

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.

Hope this helps