Students in science class measured the potential energy of a car at the top of a track. They also calculated the kinetic energy at the bottom of the track. When they compared the two, they were surprised to find that the kinetic energy at the bottom of the ramp was less than the
initial potential energy measured at the top of the ramp.
What BEST explains why the kinetic energy was less than the potential energy in this case?
O A. The kinetic energy of the toy car at the bottom of the track is less than the potential energy of the car at the bottom of the track
because some energy was converted to thermal energy as the car moved down the track.
Exhibits
OB. The kinetic energy of the toy car at the bottom of the track is less than the potential energy of the car at the bottom of the track
because the amount of kinetic energy has no relationships to the amount of potential energy in a system.
o C. The kinetic energy of the toy car at the bottom of the track is less than the potential energy of the car at the bottom of the track
because energy may be destroyed as the car moved down the track.
O D. The kinetic energy of the toy car at the bottom of the track is less than the potential energy of the car at the bottom of the track
because kinetic energy and potential energy are never equal.