Answer
Friction is a non-conservative force because it removes mechanical energy from a system and changes this energy into the form of heat on the interacting surfaces. This heat energy is not stored and can not be changed back into mechanical energy the way that potential energy can be transformed into kinetic energy.
Work Step by Step
Friction is a non-conservative force because it removes mechanical energy from a system and changes this energy into the form of heat on the interacting surfaces. This heat energy is not stored and can not be changed back into mechanical energy the way that potential energy can be transformed into kinetic energy.
