Question

when work is said to be positive ,negative ,zero​

Answer 1

Explanation:

work = force *displacement.

work is said to be zero if force and displacement is perpendicular to each other.

Answer 2

Answer:

when work is along the direction of displacement then it is positive work done

when work is opposite to the direction of displacement then it is negative work done

when there is no displacement then there is no work done

Explanation:

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