What does kinetic energy describe?

What does kinetic energy describe?

• A. Stored energy due to position
• B. Energy associated with chemical bonds
• C. Energy of motion
• D. Random energy in particles

Answer: (C)

Kinetic energy is the energy an object has because it is moving. It depends on mass and speed—the heavier something is and the faster it moves, the more kinetic energy it has. This is captured by KE = 1/2 m v^2, which also shows why doubling speed more than doubles the energy. This energy form is different from potential energy, which is stored due to position; from chemical energy, which is tied to chemical bonds; and from thermal energy, which reflects random motion of particles. So, the concept described is the energy of motion.

Kinetic energy is the energy an object has because it is moving. It depends on mass and speed—the heavier something is and the faster it moves, the more kinetic energy it has. This is captured by KE = 1/2 m v^2, which also shows why doubling speed more than doubles the energy. This energy form is different from potential energy, which is stored due to position; from chemical energy, which is tied to chemical bonds; and from thermal energy, which reflects random motion of particles. So, the concept described is the energy of motion.