Question

which of the following describes kinetic friction? a) friction between moving parts. b) a pushing force. c) heat that must be dissipated quickly. d) friction between non - moving parts.

Explanation:

Kinetic friction occurs when two surfaces are in relative motion (moving). Option B is a pushing force which is not friction. Option C is about heat dissipation, not the definition of kinetic friction. Option D is friction between non - moving parts (static friction).

Answer:

A. Friction between moving parts.