Question

Work done by an applied force on a body moving on a rough horizontal plane with uniform velocity

Answer 1

here is your answer :-

Here the body is moving on a rough horizontal plane. Frictional force opposes the motion of the body. Therefore, in order to maintain a uniform velocity, a uniform force must be applied to the body. ... The resistive force of air acts in the direction opposite to the direction of motion of the pendulum.

Hope it will help you.

Answer 2

Explanation:

the above ans is right ☺️..........