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Copy edited. (its = possessive, it's = "it is" or "it has". See for example <http://www.wikihow.com/Use-its-and-it's>.)
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edit approved Nov 28, 2014 at 17:44
Peter Mortensen
edit approved Nov 28, 2014 at 17:44
Peter Mortensen
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ifIf the occupants of the space station were not aware of it'sits design and could not look out a window then there is no way to tell if it is rotating or they are near a earth size planet that causes the gravity.

orbitingOrbiting around another space station will causes a sensation of gravity, and it seems you are contradicting yourself, if. If there is any rotational motion about of a body around it'sits own axis or another space station then the occupants will feel a force you have defined as gravity. theyThey can't not feel it as in your space station 1 scenario.

that'sThat's how I see it as a non-pro.

asAs to acceleration, no you do not need a fixed reference point, in. In contrast to velocity which is defined as relative to the velocity of something else, acceleration is absolute in a sense that it is not relative to something else.

if the occupants of the space station were not aware of it's design and could not look out a window then there is no way to tell if it is rotating or they are near a earth size planet that causes the gravity.

orbiting around another space station will causes a sensation of gravity, seems you are contradicting yourself, if there is any rotational motion about of a body around it's own axis or another space station then the occupants will feel a force you have defined as gravity. they can't not feel it as in your space station 1 scenario.

that's how I see it as a non-pro.

as to acceleration, no you do not need a fixed reference point, in contrast to velocity which is defined as relative to the velocity of something else, acceleration is absolute in a sense that it is not relative to something else.

If the occupants of the space station were not aware of its design and could not look out a window then there is no way to tell if it is rotating or they are near a earth size planet that causes the gravity.

Orbiting around another space station will causes a sensation of gravity, and it seems you are contradicting yourself. If there is any rotational motion about of a body around its own axis or another space station then the occupants will feel a force you have defined as gravity. They can't feel it as in your space station 1 scenario.

That's how I see it as a non-pro.

As to acceleration, no you do not need a fixed reference point. In contrast to velocity which is defined as relative to the velocity of something else, acceleration is absolute in a sense that it is not relative to something else.

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Peter
Peter
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if the occupants of the space station were not aware of it's design and could not look out a window then there is no way to tell if it is rotating or they are near a earth size planet that causes the gravity.

orbiting around another space station will causes a sensation of gravity, seems you are contradicting yourself, if there is any rotational motion about of a body around it's own axis or another space station then the occupants will feel a force you have defined as gravity. they can't not feel it as in your space station 1 scenario.

that's how I see it as a non-pro.

as to acceleration, no you do not need a fixed reference point, in contrast to velocity which is defined as relative to the velocity of something else, acceleration is absolute in a sense that it is not relative to something else.