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Why is momentum always conserved?

  1. Feb 18, 2005 #1
    Why is momentum always conserved? Please explain this in real terms of physics rather than just rearrangements of equations. ( i have a thorough understanding of maths, but i have asked this question before and people always give the same answer of f= ma, etc, and therefore it just is! :wink: )

    Furthermore, what actually IS momentum?

  2. jcsd
  3. Feb 18, 2005 #2


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  4. Feb 18, 2005 #3


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    Cheman, I suggest you look into Noether's Theorem and translational symmetry.
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