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How does a starship stop?
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[QUOTE]Originally posted by Joshua Bell: [QB] If you're trying to make it realistic (i.e. considering things like conservation of energy, momentum, etc) just remember that since motion is relative, any trick you can use to "stop" can also be used to "start". If you have a Plot Device that can slow a ship from 0.5c to 0c in time T using energy E, then simply by changing your reference frame (putting the camera somewhere else, as it were) you can use the same device to accelerate from 0c to 0.5c in time T with energy E. Most Star Trek physics can only be salvaged by appealing to a privileged reference frame - this is probably another one of those cases where you just have to assume coming to rest with a special frame takes far less energy than accelerating relative to the special reference frame. Once you've established that, any sort of magical device or field can work. Interestingly, this is the opposite assertion of the "subspace anchor" theory in dominance before the TNG:TM came out. At that time, the concern was how ships slowed from warp speed, and the idea was that the ship needed some active mechanism to overcome "warp inertia". Now it is generally assumed that a ship must expend constant energy to stay in warp, otherwise it will revert to relativistic speeds. [/QB][/QUOTE]
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