The force of kinetic friction between two surfaces is independent of the area of contact between the surfaces.

Question

Quizplus · Accepted Answer

The force of kinetic friction between two surfaces depends on the coefficients of friction and the normal force between the surfaces, but not on the area of contact. This is because the force of friction is proportional to the normal force, which is perpendicular to the surfaces and does not depend on the surface area that is in contact.

The Force of Kinetic Friction Between Two Surfaces Is Independent