Question

what is potential energy?
the energy of molecules in motion
the energy contained within a system because of its position
the energy of motion
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Explanation:

To determine the correct definition of potential energy, we analyze each option:

1. "The energy of molecules in motion" describes kinetic energy (energy of motion), not potential energy.
2. "The energy contained within a system because of its position" is the definition of potential energy (energy stored due to position, configuration, or state, e.g., gravitational potential energy from height, elastic potential energy from stretch/compression).
3. "The energy of motion" also describes kinetic energy.

Thus, the correct option is the one stating: "The energy contained within a system because of its position" (select this option).

Answer:

To determine the correct definition of potential energy, we analyze each option:

1. "The energy of molecules in motion" describes kinetic energy (energy of motion), not potential energy.
2. "The energy contained within a system because of its position" is the definition of potential energy (energy stored due to position, configuration, or state, e.g., gravitational potential energy from height, elastic potential energy from stretch/compression).
3. "The energy of motion" also describes kinetic energy.

Thus, the correct option is the one stating: "The energy contained within a system because of its position" (select this option).