1. The problem statement, all variables and given/known data The space and time coordinates of two events measured in the frame S are as follows: Event 1: x1 =x0, t1 =x0/c, y1 =0, z1 =0 Event2: x2 =2x0, t2=x0/2c, y2 =0, z2 =0 (a) There exists a frame in which these events occur at the same time. Find the velocity of this frame with respect to S. (b) What is the value of t at which both events occur in the new frame? 2. Relevant equations Lorentz transformation equations http://en.wikipedia.org/wiki/Lorentz_transformation" [Broken] 3. The attempt at a solution I think you just use the Lorentz transformation equations in the above link, but I wasn't sure.