A lorry and a car moving with the same K.E. a | vedclass

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Question

(C) According to the work-energy theorem,the work done by the retarding force is equal to the change in kinetic energy of the vehicle.$W = \Delta KE$S

Vedclass · Accepted Answer

Both come to rest in a same distance

Vedclass · Answer

(C) According to the work-energy theorem,the work done by the retarding force is equal to the change in kinetic energy of the vehicle.$W = \Delta KE$Since the vehicles are brought to rest,the magnitude of work done by the retarding force $F$ over a stopping distance $S$ is equal to the initial kinetic energy $(KE)$.$F 	imes S = KE$$S = \frac{KE}{F}$Since both the lorry and the car have the same initial $KE$ and are subjected to the same retarding force $F$,the stopping distance $S$ will be the same for both vehicles.

$A$ lorry and a car moving with the same $K.E.$ are brought to rest by applying the same retarding force,then

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