So our average velocity is 39 m/s times 78 seconds and let's just get our calculator out for this we have 39*78...gives us 3042 so this gives us 3042... and then m/s times second just leaves us with meters so you need a runway of over 3000 meters for one of these suckers to take off or over 3 kilometers, which is about 1.8 or 1.9 miles just for this guy to take off which I think is pretty fascinating