In physical education class, students stand in a straight line against the gym wall. When the teacher blows a whistle, the entire class runs to the other side of the room. Which of the following correctly describes the students’ energy?
A. The students gain potential energy as they run across the gym.
B. The students move from a state of potential energy to one of kinetic energy.
C. The students use kinetic energy both when they are stopped and while they are running.
D. The students do not have energy when they are stopped, but they gain energy by running.
