friction

• friction is a force that opposes an object's motion resulting in the slowing own or even stopping the moving object
• friction occurs when an object rubs against an object Friction always acts opposite the direction of an objects motion. The floor exerts a frictional force opposite of an object
• friction does not only occur on the surfaces of solid objects rubbing agaisnt eachother, but it also occurs when air particles rub against objects falling down, thrown upward the force that opposes the movement of objects in air is called air friction or air resistance