kinetic energy: Quick Facts

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Illustration showing examples of energy types: a raised hammer and a drawn bow represent potential energy, the swinging hammer and released arrow illustrate kinetic energy, and the hammer striking a nail demonstrates mechanical energy.

Diagram showing the sequence of uranium nucleus fission after being struck by a neutron: the nucleus absorbs the neutron, deforms, splits into fragments, releases more neutrons and gamma rays, and emits beta particles as the fragments decay. Labels identify neutrons, protons, beta particles, and gamma rays, with accompanying explanatory text.

How does a simple pendulum work?

The law of conservation of energy explained

How energy can change from one form to another

Hear about the proof suggesting an absence of absolute time implies the law of conservation of energy and that force conserves energy

Understanding potential and kinetic energy in action

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E = mc2 energy free energy potential energy mechanical energy binding energy internal energy zero-point energy radiant energy radiation combustion geothermal energy

Electric power lines against sunset (grid, power, wires, electrical, electricity)

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