Four vehicles are moving along a straight road

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

Four vehicles are moving along a straight road. Car: mass 1000 kg1000\,\text{kg}, speed 20 m/s20\,\text{m/s} Truck: mass 3000 kg3000\,\text{kg}, speed 10 m/s10\,\text{m/s} Motorcycle: mass 200 kg200\,\text{kg}, speed 30 m/s30\,\text{m/s} Bicycle: mass 80 kg80\,\text{kg}, speed 12 m/s12\,\text{m/s} Which option shows the correct descending order of their kinetic energies? (a) Motorcycle > Car > Bicycle > Truck (b) Car > Truck > Motorcycle > Bicycle (c) Truck > Car > Motorcycle > Bicycle (d) Car > Motorcycle > Truck > Bicycle

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