Friction is the force that two surfaces exert on each other when they rub against each other. Some Causes of Friction are: the strength of the force of friction depends on two factors: how hard the surfaces push together and the types of surfaces involved. Smooth surfaces have less friction; bumpy surfaces have more. Friction acts in a direction opposite to the direction of the object’s motion. Because of static friction, you must use more force to start the motion of stationary objects.
What are the Causes of Friction?
