A car converts the chemical energy of gasoline to the mechanical energy of motion. The total energy of motion is less than the total energy stored in the gasoline. Evidence that energy is still conserved, however, is found in which of the following observations? A. The mass of the moving object, the car, is greater than that of the gasoline.
B. The energy in the gasoline was extracted from crude oil, which had more energy.
C. Some of the energy of the gasoline is also converted to heat and sound energy.
D. Not all car engines are equally efficient at this energy transformation.