when it moves
to eliminate friction the energy must be stationary or at absolute zero temp
Friction causes heat. Heat is a source of energy.
Thermal
friction
Heat.
Heat.
Heat.
Friction requires energy to overcome it. This causes loss of energy in the system. Loss of energy in a system, by definition, is a reduction of efficiency.
Friction is a force present when things rub against eachother. Friction causes heat energy, and it also causes motion between surfaces to be reduced.
Slopes have the same friction of the road but in slopes the Potential energy changes into Kinetic Energy which causes movement..
Friction
Friction
IN SIMPLE WORDS: Friction turns mechanical energy into heat energy which causes a loss in mechanical energy and loss in possibility to continue motion..