Question

What is the best explanation of work?

Answer 1

Answer:

In  physics, work is defined as a  force  causing the movement—or displacement—of an object. In the case of a constant force, work is the scalar product of the force acting on an object and the displacement caused by that force.

Answer 2

Answer: option D

Explanation:  In physics, you say that a force is "doing work" when the force is acting on an object and causes a movement in the said object. This means that if you start pushing a wall, and the wall does not move, there is no work generated, indifferent of the amount of force applied.

Under this viewpoint, the right option is D.

"Work occurs when a force acts on an object and causes a displacement of that object."