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I looking up coriolis transport theorem for rotating refrence frames and while reading through this derivation he wrote:

In Newtonian mechanics, scalar quantities must be invariant for any given choice of frame,...

He is refering to the acceleration. I don't know the reasoning for that, but I know that it's clear for the length of the "vector from source to test point" which is scalar and invariant over transformation and rotation.

Question:

  • Why is acceleration invariant over transformation and rotation?
  • Why In Newtonian mechanics, must scalar quantities be invariant for any given choice of frame?
  • some rigorous math read for scalar vs invariant "hopfully doesn't include tensors".
  • Some history read for scalar vs invariant.
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  • $\begingroup$ The distance from the origin to a particular point is not invariant, since if you move the origin the distance is different. So it is probably a very limited meaning intended... $\endgroup$
    – Emil
    Commented Jun 16, 2018 at 9:28
  • $\begingroup$ I meant difference vector from source to dist. $\endgroup$
    – I.Omar
    Commented Jun 19, 2018 at 3:47
  • $\begingroup$ Scalar quantities aren't just invariant in Newtonian mechanics, they're invariant in relativistic physics too. $\endgroup$
    – Mozibur Ullah
    Commented Jun 19, 2018 at 7:33
  • $\begingroup$ not after Lorentz transformation. $\endgroup$
    – I.Omar
    Commented Jun 19, 2018 at 11:35

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