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A comment on How far could a spaceship go if we never ran out of thrust? (2020). Parent comment

Re:How far could a spaceship go if we never ran out of thrus... by stavros on Tuesday August 10, 2021 @08:21AM (#28127916)
Hmm, but if we treat the end of the rope as an object which accelerates at x m/s^2, and I accelerate at 2x m/s^2, wouldn't I eventually reach that object? I don't know what I'm not getting...
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Re:How far could a spaceship go if we never ran out of thrus... by cygx on Tuesday August 10, 2021 @08:29AM (#28127986)
> and I accelerate at 2x m/s^2

A constant lab frame acceleration is incompatible with special relativity.

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Re:How far could a spaceship go if we never ran out of thrus... by JZumun on Tuesday August 10, 2021 @09:31AM (#28128596)
You can never go faster than c, so you can never reach anything that's being moved faster away.
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