Physics makes it possible Friction is the force that resists the movement of two surfaces sliding against each other. It comes in two main types: static and kinetic. Static friction occurs when objects are not moving and resists any attempt to start their movement. For example, if you’re trying to push a heavy box across a floor in your home, it might not move at first because static friction is holding it in place. The moment the force you apply is stronger than the static friction, the object