friction type of friction
Friction Friction is a force between two surfaces that are sliding, or trying to slide, across each other. For example, when you try to push a book Along the floor, friction makes this difficult. Friction always works in the direction opposite to the direction in which the object is moving, or trying to move. TYPES OF FRICTIONS Static Friction Static friction acts on objects when they are resting on a surface. For example, if you a...