Answer:
By work-energy theorem, Loss in K.E. of the vehicle \[=\]Work done against retarding force \[=\]Retarding force x distance travelled \[\therefore \]Distance travelled \[\text{=}\frac{\text{Loss in K}\text{.E}}{\text{Retarding force}}\] As both the kinetic energy and retarding force are same, so both the lorry and the car would come to rest in the same distance.
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