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Delzac
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Homework Statement
Usually in physics problem on special relativity, the state that this particular spaceship is traveling at, say, 0.6c.
Question is, where does this 0.6c come from? If the speedometer in the cockpit reads 0.6c, does it mean that the observer will look and think that it is traveling at 0.6 c?
I suppose spacecraft determines its speed with reference to its surrounding, that's how we all determine your own speed isn't it? From a 1meter mark to another, how long did it take. Craft determines its speed via this method, the environment outside would length contract wouldn't it? So is the velocity from the 2 different frame the same?
Lorentz Velocity Transform tells me that it would, cause,
[tex] u'_x = 0 [/tex]
Any ideas? Any help will be appreciated.