Question

Is friction a force? What evidence do you have?

Answer 1

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

Step-by-step explanation:

my evidence is well knowledge

Answer 2

Yes, friction is a force which produces resistance in the motion of two solid bodies that are sliding over each other. Friction is a contact force because it only occurs between two bodies which are physically attached with each other.

For example, when we push a box in the forward direction, its motion is resisted by the surface on which it is moving. This resistive force which prevents the box from moving is called friction force.