Question
Physics Question on work, energy and power
The work done by a body against friction always results in
A
loss of kinetic energy
B
loss of potential energy
C
gain of kinetic energy
D
gain of potential energy
Answer
loss of kinetic energy
Explanation
Solution
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.