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#2
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armwulf (12/23/2015) [-] For those wondering if some sort of space plane could do something like this
Imagine earth is a fixed point and the rest of the universe is rotating around it. That is in fact how you picture everything right now.
You are moving relative to earth, it is your starting point. At this moment, you have the same momentum as earth. You need to use energy to change your momentum.
Imagine earth is a fixed point and the rest of the universe is rotating around it. That is in fact how you picture everything right now.
You are moving relative to earth, it is your starting point. At this moment, you have the same momentum as earth. You need to use energy to change your momentum.
#24 to #5
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animesource (12/23/2015) [-]
Einstein or some other ****** said it is impossible to determine whether you are moving or not as long as your speed is constant.
#34 to #6
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thefirespike (12/23/2015) [-] so youre saying we can move in a jet thats going millions of miles per second if one capable of it was real and be fine as long as the acceleration to that point was at a moderate pace? cool.
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armwulf (12/24/2015) [-] Yeah, pretty much. Speed is irrelevant. That said, space is not a COMPLETE vacuum. There are some molecules drifting around up there. Then there are the gas clouds, nebulae, etc.
Now, TURNING is a form of acceleration. So is slowing down. So a ship moving at that speed would also have to turn and slow down at the same extremely slow rate. This makes it- impractical.
Now, TURNING is a form of acceleration. So is slowing down. So a ship moving at that speed would also have to turn and slow down at the same extremely slow rate. This makes it- impractical.
