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 Why kinetic energy is mv2/2?

ID: why-kinetic-energy-is-mv-2-2

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Why kinetic energy is mv2/2? by Ciro Santilli 37  Updated 2025-05-26  +Created 1970-01-01
  • why the square: physics.stackexchange.com/questions/535/why-does-kinetic-energy-increase-quadratically-not-linearly-with-speed on Physics Stack Exchange. Ron Maimon's answer is great, as it relies only on the following staring points:
    • energy is conserved
    • Galilean invariance
    He also offers a symmetry argument considering the case of potential energy.
  • why the half: physics.stackexchange.com/questions/27847/why-is-there-a-frac-1-2-in-frac-1-2-mv2 on Physics Stack Exchange
Others:
  • physics.stackexchange.com/questions/156696/why-is-kinetic-energy-defined-as-1-2m-v2
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