Which energy category involves motion?

Which energy category involves motion?

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

Answer: (B)

Motion is captured by kinetic energy, the energy an object has because it is moving. Its amount depends on both mass and speed, following KE = 1/2 m v^2, so a heavier object or one that moves faster has more kinetic energy. This sets it apart from potential energy, which comes from an object's position (like height in a gravitational field or stretch in a spring), and from thermal energy, which arises from the random microscopic motion of particles and is tied to temperature. Nuclear energy comes from the binding energy within the nucleus. So the category that directly involves motion is kinetic energy.

Motion is captured by kinetic energy, the energy an object has because it is moving. Its amount depends on both mass and speed, following KE = 1/2 m v^2, so a heavier object or one that moves faster has more kinetic energy. This sets it apart from potential energy, which comes from an object's position (like height in a gravitational field or stretch in a spring), and from thermal energy, which arises from the random microscopic motion of particles and is tied to temperature. Nuclear energy comes from the binding energy within the nucleus. So the category that directly involves motion is kinetic energy.