3 Answers

  1. Only motion in inertial reference frames is relative, that is, it is uniform and rectilinear. The rotation of the Earth is not rectilinear, so it will not be possible to directly replace it with the rotation of the Universe, and the laws of motion will have to be complicated.

  2. rotation is absolute, because in the rotational frame of reference there are non-removable centrifugal forces. Only motion in inertial systems is relative. These are systems where bodies that are not affected by any forces (except gravity) are at rest or in uniform motion. This obviously does not apply to a rotating system.

  3. I will even say more – the universe revolves around you personally))

    How to see what's already there. Everything is relative. Only then the relativity binding must be specified.

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