Thrust of a liquid always acts ____ to the surface of contact.
Friction depends on the _________ of surfaces.
Friction depends on the _____ of two surfaces in contact.
Assertion : Friction always opposes the motion. Reason : Whenever one surface moves or tries to move over another surface, the force of friction starts acting on the surfaces.
Fill in the following blanks with suitable words : Friction always opposes………………………between the surface in contact with each other .
