Question

how do we know that work is done?

Answer 1

Answer:

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Explanation:

Work, in physics, measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement. ... If the force is being exerted at an angle θ to the displacement, the work done is W = fd cos θ.

Answer 2

Explanation:

work is done when a force that is applied to an object moves that object. The work is calculated by multiplying the force by

the amount of movement of an object (W=F×D).

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