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A comment on Relativistic Spaceship. Parent comment
Opening comment said that you'd need absurd amounts of mass to accelerate a person to near light speed.
I said that the velocity of ejecting that mass mattered. That if you could push out mass at speed of light, you'd need a lot less mass.
Not that you'd push out the same mass at speed of light. Or that you could arbitrarily push things out at speed of light. Sheesh.
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Opening comment said that you'd need absurd amounts of mass to accelerate a person to near light speed.
I said that the velocity of ejecting that mass mattered. That if you could push out mass at speed of light, you'd need a lot less mass.
Not that you'd push out the same mass at speed of light. Or that you could arbitrarily push things out at speed of light. Sheesh.