1. Two rockets, A and B, leave a space station with velocity vectors va and vb relative to the station frame S, perpendicular to each other. (a) Determine the velocity of A and to B, vba. (b) Determine the velocity of B relative to A, vab. (c) Explain why vab and vba do not point in opposite directions 2. Relevant equations U' = ( U - v ) / (1 - (vU/c^2) ) 3. The attempt at a solution I have mulled over this problem for a while now and I know that since we don't have values for the velocities that U' will be some percent of U, but I am getting confused on the fact that the two velocity vectors are perpendicular to each other, which I didn't think would matter. Perhaps there is something to the vector being extended by both vectors simultaneously increasing? Any help is greatly appreciated.