I Velocity addition at an angle

Myslius

Summary
How would you derive a formula for relativistic velocity addition where u and v aren’t parallel? I’m looking for a formula where theres an angle involved
Any ideas?

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Mentor

Myslius

This formula seems incomplete, theres no angle

Ibix

Do you understand how that formula is derived?

PeterDonis

Mentor
This formula seems incomplete
Yes, so you might want to check other sources. It shouldn't be hard to find a source online that has the more general formula.

Myslius

It takes into account that only one coordinate x is transformed as far as i understand, i want to calculate relative velocities for any angle, lets say 30 degrees angle

Myslius

Well if you have a source or know a formula already that would be great

Ibix

So if you can see how it transforms $\Delta x$ then can you do the same for $\Delta y$?

PeterDonis

Mentor
if you have a source or know a formula already that would be great
For something that can be found this easily with an online search, it would be better for you to find or derive it yourself. If you have a question about what you find, you can start a new thread to ask it.

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