Item NG100002: When a ball is falling down, the gravitational potential energy of the ball is transformed into motion energy but the elastic energy of the ball is not.
A ball is falling toward the ground. The speed of the ball increases as it falls. While the ball is falling and before it hits the ground, which of the following forms of energy is gravitational potential energy being transformed into? (Assume that the ball is not stretched or compressed when it is traveling through the air.)
- Both kinetic energy (motion energy) and elastic potential energy
- Kinetic energy (motion energy) but not elastic potential energy
- Elastic potential energy of the ball but not kinetic energy (motion energy)
- Neither elastic potential energy nor kinetic energy (motion energy)