The pilot of rocket A, moving at a velocity of 0.8c relative to earth, observes a...

The pilot of rocket A, moving at a velocity of 0.8c relative to earth, observes a second rocket B that moves along the same line approaching him from behind at 0.7c. What does an observer on earth measure for the second rocket’s velocity?
For observer S, a meter stick at rest makes an angle of 25 degrees with the x-x’ axis. How long is that meter stick for S? An observer S’ who moves along the y-y’-axis at 0.5c sees what length and what angle for the meter stick?

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genius_generous answered 1 year ago

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