ASPECt
Energy: Forms, Transformation, Transfer, and Conservation
Item NG013003: As a rubber balls falls to the floor, the motion energy of the ball increases and the gravitational potential energy of the ball decreases because the gravitational potential energy is transformed into motion energy.
A rubber ball speeds up as it falls toward the floor. How and why do the kinetic energy (motion energy) and gravitational potential energy of the ball change as it falls?
- Both the kinetic energy and gravitational potential energy increase because as an object moves, new energy is made.
- Both the kinetic energy and gravitational potential energy decrease because as an object moves, energy is used up and is not converted into any other form of energy.
- The kinetic energy decreases, and the gravitational potential energy increases because the kinetic energy is converted into gravitational potential energy.
- The kinetic energy increases, and the gravitational potential energy decreases because the gravitational potential energy is converted into kinetic energy.
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 1512 |
4–5 n = 0 | 6–8 n = 863 |
9–12 n = 649 |
Male n = 698 |
Female n = 787 |
English n = 1385 |
Other n = 103 |
|
| A. | 28% | N/A | 29% | 25% | 26% | 28% | 28% | 17% |
| B. | 17% | N/A | 17% | 16% | 17% | 16% | 16% | 18% |
| C. | 23% | N/A | 24% | 20% | 22% | 23% | 23% | 25% |
| D. | 33% | N/A | 29% | 39% | 34% | 33% | 33% | 39% |