Question

♡define work done

♡degine positive and negative energy of work done
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Answer 1

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.

Work can be either positive or negative: if the force has a component in the same direction as the displacement of the object, the force is doing positive work. ... If the force has a component in the direction opposite to the displacement, the force does negative work.

Answer 2

Answer:

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.

Positive work follows when the force has a component parallel to the displacement. Positive work adds energy to a system. Negative work follows when the force has a component opposite or against the displacement. Negative work removes or dissipates energy from the system.