I don't have any specific numerical values for this, as it's a general question, but hopefully I explain it well enough using only words: If you plot a graph of position vs. flight time (of a sound pulse, for example), what is the slope of that graph going to be? (That is, what does the slope represent?) Also, if you were to calculate the slope of a position-time graph, how would you determine the velocity of sound from that calculated information? (I believe that you can theoretically do that, right?) I've heard that can't you calculate the velocity of sound by taking a single measurement and dividing the time of flight into the total distance the sound pulse travel, but I'm not exactly clear as to why. If anyone has any response to either of those questions, I'd very much appreciate your insight.