15. The force which makes a vehicle to stop when break is applied is called A.Gravitational force B.Vanderwalls force C.Frictional force D.Covalant force
Option C Solution: A brake is a mechanical device that inhibits motion by absorbing energy from a moving system. It is used for slowing or stopping a moving vehicle, wheel, axle, or to prevent its motion, most often accomplished by means of friction.
