Final answer:
Gravitational energy is the type of energy stored by a rock on a hilltop, ready to be converted to kinetic energy as it moves downhill.
Explanation:
Gravitational energy is the type of energy stored by a rock resting on a hilltop. This energy is related to the position of the rock in a gravitational field, representing the potential for the rock to fall and convert potential energy into kinetic energy as it moves downhill. For example, a rock perched on a cliff has gravitational potential energy that is converted to kinetic energy when it falls.
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