Question

as an apple falls from a tree, which types of energy are changing? a. kinetic energy and nuclear energy b. elastic energy and sound energy c. gravitational potential energy and kinetic energy d. light energy and gravitational potential energy

Explanation:

As the apple falls, its height above the ground decreases, reducing gravitational - potential energy (given by $U = mgh$, where $h$ is decreasing). At the same time, its speed increases, increasing kinetic energy (given by $K=\frac{1}{2}mv^{2}$, where $v$ is increasing). There is no nuclear, elastic, sound, or light energy change in this simple falling - apple scenario.

Answer:

C. Gravitational potential energy and kinetic energy