14. Frictional force acts in A.The same direction as the motion B.The opposite direction of the motion C.All the directions D.Upward direction
Option B Solution: The part which is tangent to the contacting surfaces is called the frictional force. Friction is a resisting force that acts on a body to prevent or retard its motion. Friction force always acts tangent to the surface at points of contact. Friction force acts opposite to the direction of motion.
