work done is always
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Whenever a force is applied to an object, causing the object to move, work is done by the force. 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.##
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Answer:
Work done is positive, negative or zero depending on the force applied on a body
Explanation:
Work done is Positive
Only when the force and the motion of the body acts in the same direction is considered as the work done is positive.
Work done is negative
Only when the force and the motion of the body acts in the opposite direction is considered as the work done is negative.
Work done is Zero
Only when the force and the motion of the body are perpendicular the work done is zero
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