Final answer:
Kinetic energy is easier to gather evidence for than potential energy because kinetic energy is visible or can be directly measured as an object moves, unlike potential energy which is contingent on position and not always observable.
Step-by-step explanation:
The reason why it is easier to gather evidence that something has kinetic energy compared to potential energy is because potential energy is often hidden and depends on position (b). While kinetic energy, which is the energy of motion, is often visible or can be directly measured as an object moves. On the other hand, potential energy, also known as stored energy, is not always apparent and can be challenging to quantify since it is contingent upon an object's position relative to other objects or fields, which may not be as easily observable.
For example, a rock held above the ground contains potential energy due to its elevated position. Once released, the rock converts this potential energy into kinetic energy as it falls. This conversion shows how potential energy can be transformed into kinetic energy, illustrating the dynamic nature of energy states.