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    jgris94468's Avatar
    jgris94468 Posts: 1, Reputation: 1
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    #1

    May 2, 2010, 01:46 PM
    .99 the speed of light

    At .99 the speed of light, exactly how tall would I be to an outside observer?
    Jim
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    ebaines Posts: 12,131, Reputation: 1307
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    #2

    May 3, 2010, 06:45 AM

    It's a trick question. The perception of your height by the stationary observer is dependent on the vertical component of your velocity relative to the observer (I'm assuming here that you're standing vertically and moving in a horizontal direction - like standing on a train). But if you're traveling horizontally your vertical component of motion is 0, and there is no apparent shortening in the vertical direction.

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