3 ms·
It's better to think that our 4 velocity always has a magnitude of 1 and use c only as a scaling factor necessary because our weird choice to use different unit
by scotty79 2y ago
It's better to think that our 4 velocity always has a magnitude of 1 and use c only as a scaling factor necessary because our weird choice to use different units for time and space.
Acceleration is a rotation in this weird 3+it dimensions.
I think it better to think about 4 velocity as a unitless quantity. Because our intuitions about units and dimensions are formed by 3 dimensional space where every dimension can be swapped with any other and everything is still the same. 1 meter rotated is still 1 meter. Doesn't become 0.56m/s