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Which has less kinetic energy, a car traveling at 45 km/h or a half-as-massive car traveling at 90 km/h? A. The 90 km/h car has

Which has less kinetic energy, a car traveling at 45 km/h or a half-as-massive car traveling at 90 km/h? A. The 90 km/h car has less kinetic energy. B. Both have the same kinetic energy. C. The 45 km/h car has less kinetic energy

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