1. The problem statement, all variables and given/known data Speed of sound in air is 340m/s. Sound from a jet, moving a 100m/s through the air, will have a speed of: 2. Relevant equations Doppler effect, and v = Sqrt(bulk/density) 3. The attempt at a solution The answer for this is 340m/s. I was wondering why. Because all the book states is that wave velocity is INDEPENDENT of medium (I thought velocity of a wave was medium dependent).