1. The problem statement, all variables and given/known data http://puu.sh/7vC46.png [Broken] http://puu.sh/7vBG5.png [Broken] Note: In this image the ohm symbol represents the angular frequency of the earth's rotation 2. Relevant equations Gamma = 1/SQRT(1-v^2/c^2) V (relative to centre of earth) = angular frequency(R+h) +/- v v= plane velocity dependent on direction R= radius of earth h= height plane is flying 3. The attempt at a solution The first part about showing it isn't dependent was easy and I just did some basic algebra. However, the second part is problematic.I can't seem to get to the equation it's asking for using the 2 tricks suggested. I think possibly because I'm using the wrong velocities when putting in Gamma(earth) and Gamma(plane) The velocities I used were V(plane) = Angular frequency*(R+h)+/-v V(Earth) = Angular frequency*(R+h) I put those into the gamma formular and went from there. I think I might be using the wrong velocities and have mucked up the inertial frames or something.