The total kinetic energy of two cars is measured before and after they crash into each other. The total kinetic energy of the two cars after the crash is less than the total kinetic energy before the crash. Which of the following best explains the loss of kinetic energy?
Some of the cars' kinetic energy was converted to sound and heat energy
Both of the cars were being pulled downward by the force of gravity,
O The cars will eventually stop moving, which shows that energy is always lost.
The car with more mass gave up its kinetic energy to the car with less mass.