Final answer:
A bicyclist pedaling uphill has both gravitational potential energy due to the height they gain and kinetic energy because they are in motion. The further they climb, the more potential energy is stored, while kinetic energy is present during the entire journey.
Step-by-step explanation:
Classifying the Energy of a Bicyclist Pedaling Uphill:
When a bicyclist is pedaling uphill, they are working against the force of gravity. In doing so, they are increasing their gravitational potential energy. This form of energy is stored due to the height they achieve above the base of the hill. Nonetheless, while they are moving, there is kinetic energy at play because the motion of pedaling translates into energy of motion. Therefore, the bicyclist climbing a hill possesses both kinetic and potential energy. The potential energy increases as they move higher, and the kinetic energy is present due to their ongoing motion. Once the bicyclist reaches the top, if they were to stop pedaling, the energy they possess would be almost entirely gravitational potential energy.
It is important to remember that potential energy and kinetic energy are often present together and can convert into each other. For instance, if the bicyclist descends the hill, much of the stored potential energy will convert into kinetic energy, notably when the brakes are not applied, and speed increases.