what is the fastest humans can travell underwater, can you estimate in mph and does g force have the same effect. also what is the highest amount of g can a person endure in flight and is it likely this will be eradicted in the future?it seems simple from the outside looking in but im sure is emensley complicated
2006-09-15 21:21:36 · 2 answers · asked by addidascircle 1 in Science & Mathematics ➔ Other - Science
Do you mean with or without a submarine or powered craft.
Fastest human speed for swimming is a little over 5mph.
Mako sharks can have a bursting speed of almost 50mph.
Theoretically gravity is the same in and out of water.
A sub and a plane are basically the same as far as fluid
dynamics are concerned. though one moves in air and the other in water. Engineers and Boffins consider water a non-compressible substance which simplifies the math calculations when compared to air/flight resistance which is considered a compressible fluid. There's a lot of science keeping those planes in the air!
2006-09-15 21:41:22 · answer #1 · answered by Jimbobarino 4 · 0⤊ 0⤋
To complete Jimbo...
The maximum g force people can endure without training is about 7gs, where most people pass out.
At 12gs, even trained people pass out.
At 20gs, they die...
Fighter Aircraft pilots have "G suits" that reduce the effect of g forces, but they do NOT elimitate it.
On airliner take off, you can get about 1.5g MAX.
In a jet fighter, you get 3 to 4gs on catapult. More would risk pilot's conciousness... and its consequences...
In some of their manoevers (dog fight), they can get up to 11gs.
Sorry, we cannot avoid G forces...
2006-09-16 05:12:44 · answer #2 · answered by just "JR" 7 · 0⤊ 0⤋