I can't be sure, but I think you're asking about 'G's ... that press you back into
your seat when you MASH the gas pedal, and press the astronauts into their
couches during lift-off.
'G's are not a speed at all. They refer to an acceleration. That means how fast
speed is changing.
(That's what presses you back into your seat. Speed doesn't do that. When you're
cruising on a passenger airliner, you can easily be speeding along at 500 miles per
hour, but you can read a book, watch a movie, daydream, and drift off if you feel like
it. We don't feel speed. We feel changes in speed.)
One 'G' means that your speed is growing (or shrinking) by about 22 miles per hour
every second.
Fighter pilots train to experience high G-forces, and they wear special flight suits
to neutralize the forces on the body during high-G. If you or I go through 10 G's
without training or a special pressure suit, then the speed is growing by almost
220 miles per hour every second, and in that kind of situation, the blood drains
out of the brain and we pass out.
About 761 mph
357 mph
2,410kmh is 1,497.505 mph
1,750.8 mph
75 mph
69 mph It can be any speed but probably about 60 mph
46.6 mph
150 mph
it is 161.6 mph
1536.029586624 MPH
About 8.7 MPH
5.11 mph
53 mph
About 761 mph
357 mph
264.704 mph
307kmh is 190.761 mph