When a force retards the motion of a body,the | vedclass

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(C) Work done $(W)$ is defined by the formula $W = F \cdot s \cdot \cos(	heta)$,where $F$ is the force,$s$ is the displacement,and $	heta$ is the an

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negative

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(C) Work done $(W)$ is defined by the formula $W = F \cdot s \cdot \cos(	heta)$,where $F$ is the force,$s$ is the displacement,and $	heta$ is the angle between the force and the displacement vectors.When a force retards (opposes) the motion of a body,the force acts in the direction opposite to the displacement.Therefore,the angle $	heta$ between the force and the displacement is $180^{\circ}$.Since $\cos(180^{\circ}) = -1$,the work done is $W = F \cdot s \cdot (-1) = -F \cdot s$.Thus,the work done is negative.

When a force retards the motion of a body,the work done is:

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