Have fun figuring out how much that is in miles per hours.
2,727.3 mph. Also 4000 fps is 3.57 times the speed of sound at 1 atm. That's why you hear the crack of a bullet being fired. Superman need only go about 1120 fps for us to hear his sonic boom. (This varies with temperature and altitude, but 1120 is the standard number used for the speed of sound on earth. It decreases with altitude; in other words you can break the sound barrier at slower speeds).
Yes, I think this shows the attraction of the concept of wormholes through space to travel anywhere. Friction is negated. Too bad they aren't real! Interesting discussion.
Artemis
