It’s 2012 and Michael Phelps, uh, marries Donald Trump in a surprise wedding. Yeah. With his new-found wealth, Phelps decides to build himself a lair that only he can access… by swimming up the waterfall of doooooooom.
Is that even physically possible? Does the waterfall need a certain volume of water or a certain maximum flow rate? Does gravity’s effect on water on this planet make it totally impossible?
Or, let’s say I have a huge blimp filled with water. Could I shoot it with a slingshot, start a small leak and then shoot a torpedo up the stream?