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Introductory Physics Homework Help
Special theory of relativity, theoretical problem
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[QUOTE="Kennedy, post: 5904093, member: 637445"] [h2]Homework Statement [/h2] Spaceship A, traveling past us at 0.7c, sends a message capsule to spaceship B, which is in front of A and is traveling in the same direction as A at 0.8c relative to us. The capsule travels at 0.9c relative to us. A clock that measures the proper time between the sending and receiving of the capsule travels: a) in the same direction as the spaceships at 0.7c relative to us b) in the opposite direction from the spaceships at 0.7c relative to us c) in the same direction as the spaceships at 0.8c relative to us d) in the same direction as the spaceships at 0.9c relative to us e) in the opposite direction from the spaceships at 0.9c relative to us[h2]Homework Equations[/h2] None.[h2]The Attempt at a Solution[/h2] There's not much math involved in solving this problem, and it's all theoretical, but I think I'm missing a lot of something here. I don't even know where to begin when thinking about this question. Would the correct time simply be measured by the one that is moving at the exact same speed and direction as the capsule, but why? [/QUOTE]
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Special theory of relativity, theoretical problem
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