Which object has the greatest kinetic energy?(1 point) Responses a green car with a mass of 500kg moving at 21 m/s a green car with a mass of 500kg moving at 21 m/s a red car mass of 500 kg moving at 3 m/s a red car mass of 500 kg moving at 3 m/s a yellow car with a mass of 500 kg moving at 12 m/s a yellow car with a mass of 500 kg moving at 12 m/s a blue car with a mass of 500 kg moving at 30 m/s a blue car with a mass of 500 kg moving at 30 m/s