Which of the following is an example of $\mathrm{kinetic}\mathrm{energy}$?

• A. A rock resting at the top of a hill
• B. A moving car traveling down the road
• C. A stretched bow ready to shoot an arrow
• D. A battery storing electrical energy

Answer: (B)

Verified step by step guidance

1. Understand the definition of kinetic energy: it is the energy an object possesses due to its motion.
2. Identify which options describe objects that are moving, since only moving objects have kinetic energy.
3. Analyze each option: a rock resting at the top of a hill is not moving, so it has potential energy, not kinetic energy.
4. A stretched bow stores elastic potential energy, and a battery stores chemical potential energy, so neither represents kinetic energy.
5. A moving car traveling down the road is in motion, so it has kinetic energy, making it the correct example.