Is the G forse on earth the same on man in space if not can we go faster out there and not damage our bodies?

Answer 1

G force is related to acceleration, not speed.

The speed limitation down here is mostly due to air resistance and the heat it creates. Above Mach 2, the outside of an airplane starts to heat up uncomfortably, so much that by the time you reach Mach 3 (3 times the speed of sound) an airplane has to be made of exotic material as mundane aluminium alloys start to melt.

In space, there is no air, so speed is not limited by air friction, and you can go almost as fast as you want, as long as you have fuel to get you faster. There could be a problem with acceleration if a rocket engine is too powerful for them mass of the complete spaceship, and if it accelerates at more than a few G the crew would be just as incapacitated as a jet fighter pilot is when turning at a high G level.

Answer 2

There's no difference. You can experience a g force whenever the object (the one who's gravity is influencing you) is exerting force on you. You're intuition is probably that since you're between objects, there is less gravity. This is true to some degree, so you don't have to worry about making a turn in space that would usually exert 4 gs (and crush you) on earth. However, at some amount of change you probably would be affected. Problem is that the speeds required in space would be ridiculous. Speakin go speed, your question suggests that there is some relationship between speed and g force...actually it's acceleration (which is why i'm talking aobut turns). So you can go as fast as you want in space without any risk of being crushed into your seat. However, if you could somehow get a ship to go from 0 to 8000 miles an hour in 3 seconds...that would be another story. Usually ships, even ones that go really fast, speed up very gradually in space. So, in short, the answer is YES, but it's not really an issue anyway. The limits on speed in space are not the human (which is the limit on earth...unmanned planes would theoretically go much faster then current manned ones), it's simply engine technology. Me, I'd go for a plasma ion. You are constantly accelerationg. Eventually, you'll be going very fast!

Answer 3

The G force is cause by your acceleration versus the gravity surrounding you. In space it would be less than on earth. It's greater when leaving the surface of the earth due to the gravity.

However, you can also eventually achieve speeds approaching light speed at any G-factor.

If you accelerated over a distance of 1 light year at 1-G, you would achieve a speed of over 85% the speed of light and the acceleration would mimic the gravity of earth and wouldn't be stressful on the body.

Over several years accelerating at 1-G, you could achieve 99.9999% or more the speed of light, but never actually reach 100%, just get as close as you like but always less than light speed which would take eternity to reach.
 

Answer 4

The effect of gravity falls off as a function of the square of the distance (the inverse square law). When you get far enough away from Earth or some other massive body, gravity becomes negligible.

Vincent G correctly identifies the problem of air resistence and heat as a limiting factor for speed within the atmosphere. So, up to a point, you can go as fast as you want in space, as long as you stay outside the influence of large masses.

Of course, there are limits to this. Apart from some esoteric science fiction 'warp drive', you run into the light speed barrier. NOTHING can go faster than light. Nothing with mass can travel AT the speed of light. One of the functions of Einstein's theory of relativitity shows that, as an object with mass approaches light speed, its mass increases. It reaches a threshold at which point not enough energy can be applied to accelerate it further. If it COULD reach light speed, it would have infinite mass.

You appear, however, to have confused speed with acceleration. Acceleration -- the application of thrust -- produces inertia, which, in space, is almost indistiguishable from gravity. That's why rocket thrust is referred to in 'gees'. You could conceivably travel at an appreciable fraction of light speed with no ill effects if you accelerated to that velocity gradually -- preferrably with a thrust of 1 gee (approximately 10 meters/sec/sec) or maybe a tad more. Assuming you had enough fuel for sustained thrust, you could reach ten percent of light speed in just under 10 days, 30 percent+ in a month.

If, however, you were to try to accelerate to that velocity at much more than 10 gees of thrust, you would be crushed.

Answer 5

G force is the force that is exerting in a human body and it is by the weight. One G force is equivalent to the normal force that we experience from the gravitational force of earth. Two G force means twice the normal force of the gravitational force of earth. So, if you weigh 100 lbs, at 2 G, you are experiencing 200 lbs of weight upon you.
But on space as the gravitational force is decreasing as the height or the gravitational forces are lessen, the G have been lessen too and the speed we are in also contributes the G force unto our body. And if speed was increased, the more we are having the G force. And with the G force so intense, we intend to pass out or black out... but on the destruction's of cells our body... I believe it will depend on the materials of the vehicles we are in... if it will be destroyed, so are we who are in the vehicle.

Answer 6

G forces are universal. They result from being accelerated or decelerated, not from constant velocity.

8-10 g will knock you out or kill you wherever you are.

You could not stand sustained g of greater than 2g. So, it is probably only safe to accelerate ships at 1g for any length of time. But you would need an awful lot of fuel to accelerate you at 1g to near light speed. Not on at the moment, I am afraid.

Its worth noting that robots are not worried by extreme g forces, so in that respect we will send them to the stars before we go, if we ever do go.

Answer 7

G force in space is much weaker than here on Earth. G force in space only becomes apparant when you venture close to space objects.
There are ions in space.When traveling at percentages of the speed of light in space these ions would kill humans.

Answer 8

no and no to much heat