Potential Energy Example Identification

Potential energy is defined as stored energy an object possesses due to its position or state. It represents the potential for an object to do work.

Analyzing Energy Forms in Options:

• A flowing river: Exhibits kinetic energy because the water is in motion.
• A rolling ball: Also possesses kinetic energy due to its movement.
• A book kept on a table: This object has stored energy because of its position relative to the Earth's gravitational pull. This is known as gravitational potential energy. If the book were to fall, this potential energy would convert into kinetic energy.
• A moving train: Clearly demonstrates kinetic energy as it is in motion.

Conclusion on Potential Energy

Among the given choices, only the book positioned on the table possesses energy due to its location, fitting the definition of potential energy.

Therefore, the correct example of potential energy is A book kept on a table.