- #1
E92M3
- 68
- 0
I know how to add speed in special relativity.
[tex]v=\frac{u+v'}{1-\frac{uv'}{c^2}}[/tex]
Is this a vector thus velocity? Or does this only apply to objects traveling on the same axis? Judging from the way it's derived, I really think that it only applies to objects on the same axis. What if I want to look at say...an object going north and an object going east in the rest frame. What then is their velocity in the frame of one of the objects?
[tex]v=\frac{u+v'}{1-\frac{uv'}{c^2}}[/tex]
Is this a vector thus velocity? Or does this only apply to objects traveling on the same axis? Judging from the way it's derived, I really think that it only applies to objects on the same axis. What if I want to look at say...an object going north and an object going east in the rest frame. What then is their velocity in the frame of one of the objects?