eli5: why can’t we create artificial gravity on space crafts by accelerating at 9.8 m/s
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You can’t accelerate forever. The energy required to maintain a constant acceleration is exponential. Even if you could accelerate constantly there is a speed limit in the universe. There would be a point when you would have to just stop accelerating (or rather you would reach relativistic speeds and I don’t know how that works). Besides, having to be constantly accelerating is not very practical for a spacecraft that presumably needs to move from place to place or just stop for a while
Edit: I am assuming you meant accelerating on a straight line at 9,8m/s*s. Constant centripetal acceleration on a circular motion is very much feasible in theory
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