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What are kinetic and potential energy?

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Quick answer

Kinetic energy is the energy of motion; potential energy is stored energy waiting to be released, often due to position. A ball at the top of a hill has potential energy that turns into kinetic energy as it rolls down — energy converting from one form to another.

Key things to understand

  1. Kinetic energy is the energy of moving objects.
  2. Potential energy is stored energy, often from position.
  3. One can convert into the other (e.g., a falling object).
  4. Together they illustrate conservation of energy.

People also ask

What's the difference between kinetic and potential energy?
Kinetic energy is energy of motion; potential energy is stored energy, such as from an object's height.
What's an example of potential turning into kinetic energy?
A roller coaster at the top of a hill (potential) speeds up as it descends (kinetic).
How are they related to conservation of energy?
Energy converts between potential and kinetic forms, but the total amount stays the same in a closed system.

Part of the guide: Energy & Electricity at Home →