DARPA patent application

[KenWittlief]

yes, but when it comes to tall buildings its not what happens at the top that matters, its what happens at the bottom

when you fall you experience normal forces until you hit the ground

if you are 'launched' to the top of the building, then you must experience high acceleration at the start of the ride. If the acceleration is too high out of the launcher you will black out (or snap your neck, or suffer internal damage...)