1. The problem statement, all variables and given/known data In the inertial system S, an event is observed to take place at point A on the x-axis and 10^-6 seconds later another event takes place at point B , 900 m further down. Find the magnitude and direction of velocity of S' with respect to S in which these two events appear simultaneous. 2. Relevant equations Lorentz's transformations x = [itex]\gamma[/itex] ( x' + vt') t = [itex]\gamma[/itex] ( t' + vx'/c^2) 3. The attempt at a solution Then, I let x/t to solve for velocity and t' = 0 because the two events appear simultaneous. Is attempt correct ?