The kinetic energy acquired by a body of mass | vedclass

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Question

(C) According to the Work-Energy Theorem,the work done by the net force on an object is equal to the change in its kinetic energy.$W = \Delta K.E.$Sin

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independent of $M$.

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(C) According to the Work-Energy Theorem,the work done by the net force on an object is equal to the change in its kinetic energy.$W = \Delta K.E.$Since the body starts from rest,the initial kinetic energy is $0$.$W = K.E._{final} - 0 = K.E._{final}$The work done by a constant force $F$ over a distance $d$ is given by $W = F \cdot d$.Therefore,$K.E. = F \cdot d$.Since the force $F$ and the distance $d$ are constants,the kinetic energy acquired is independent of the mass $M$ of the body.

The kinetic energy acquired by a body of mass $M$ in travelling a certain distance $d$,starting from rest,under the action of a constant force is:

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