Hi everyone! I'm a pilot on a private jet, in conversation one of the crew mentioned that "You get younger when flying." Now I had to correct him saying that actually it's just that time slows down as you go faster. Unfortunately for the flight attendant, going faster also means that she puts on weight! So here's a conundrum for you guys: At 500 knots (257 m/s) how much slower does time pass (relative to when we're stationary and how much more does my 50kg flight attendant weigh? Yes, I know it's a ridiculous question, but I'm intrigued. Thanks for any answers!