Question

xi) The work done by a bod: against friction always result in
(a.) Loss of kinetic energi (b.) Loss of potential energy
(c.) Gain of kinetic energy d.) Gain of potential energy​

Answer 1

Explanation:

Friction always opposes motion. A body does work against friction at the expenses of its kinetic energy. Hence, the work done by a body against friction always results in loss of kinetic energy.