What is the difference between stored energy and usable energy in the context of $\mathrm{kinetic}\mathrm{energy}$ and $\mathrm{potential}\mathrm{energy}$?

• A. Stored energy is $\mathrm{kinetic}\mathrm{energy}$, while usable energy is $\mathrm{potential}\mathrm{energy}$.
• B. Stored energy and usable energy are both forms of $\mathrm{potential}\mathrm{energy}$.
• C. Stored energy and usable energy are both forms of $\mathrm{kinetic}\mathrm{energy}$.
• D. Stored energy is $\mathrm{potential}\mathrm{energy}$, while usable energy is $\mathrm{kinetic}\mathrm{energy}$.

Answer: (D)

Verified step by step guidance

1. Begin by understanding the concepts of kinetic and potential energy. Kinetic energy is the energy of motion, while potential energy is the energy stored due to an object's position or state.
2. Stored energy typically refers to potential energy. This is because potential energy is stored in an object due to its position, such as a rock at the top of a hill or a compressed spring.
3. Usable energy often refers to kinetic energy. When potential energy is converted into kinetic energy, it becomes usable as it is the energy of motion, allowing work to be done.
4. Consider examples to illustrate the difference: A ball held at a height has stored energy (potential energy). When released, this energy converts to usable energy (kinetic energy) as the ball falls.
5. In summary, stored energy is potential energy, which can be converted into usable energy, kinetic energy, when the object is in motion or performing work.