The correct response is:
The potential energy will stay the same as long as the book stays on the table. The kinetic energy increases when the book is shoved and then gradually decreases as it slides across the table and then comes to rest on the edge.
Explanation:
- Potential Energy: The potential energy of the book remains constant while it is on the table because its height above the ground does not change significantly.
- Kinetic Energy: When the person shoves the book, it gains kinetic energy (due to the increase in its speed). As the book slides across the table, it eventually slows down due to friction, which dissipates that kinetic energy as thermal energy, causing the kinetic energy of the book to decrease until it comes to rest.