Which type of energy is associated with motion?

• A. Potential energy
• B. Thermal energy
• C. Kinetic energy
• D. Chemical energy

Answer: (C)

Kinetic energy is the energy of motion. It depends on both how heavy something is and how fast it’s moving, quantified by KE = 1/2 m v^2. That’s why this type of energy best describes motion: a moving object carries energy simply because it is in motion, and that energy increases rapidly as speed increases.

In contrast, potential energy is energy due to position (like height in a gravitational field), while thermal energy relates to the overall microscopic motion and vibrations of particles related to temperature. Chemical energy is stored in bonds between atoms and is released or absorbed during chemical reactions. A quick example: a 2 kg object moving at 3 m/s has kinetic energy of 9 joules, illustrating how mass and speed combine to yield motion-associated energy.