(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

In a certain frame S, two events A and B are separated spatially by 3ly with A occuring 1 year before B. What must be the relative speed of a frame S' such that the two events occur simultaneously?

2. Relevant equations

3. The attempt at a solution

Don't I just use: dt' = gamma(dt-B/c dx)

but when i put in dt = 1 and dx = 3 i get to gamma = 3B/c which i can't solve! am i doing it right?

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# Homework Help: Quick Special Relativity Q

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