1. The problem statement, all variables and given/known data Spaceship A and spaceship B are each a proper length 100.0 m and travel at constant velocities. The spaceships pass in outer space while traveling in opposite directions. The pilot of A observes that 2 microseconds elapse while spaceship B passes by the cockpit window, heading in the opposite direction. (a) What is the magnitude of the relative velocity of the ships? 3. The attempt at a solution So, I did 100m/(2x10^-6 seconds) and I got a velocity of 5x10^7m/s. I don't know what to do after that though. It doesn't seem like there is enough information is given to use the relative velocity equation, but the answer can't just be that simple, right? Can you guys tell me what I need to do next or if that answer is correct? Thanks in advance.