p38_078 - S : u = u + v 1 + u v/c 2 = . 80 c + 0 . 60 c 1 +...

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78. Let the reference frame be S in which the particle (approaching the South Pole) is at rest, and let the frame that is Fxed on Earth be S 0 .Then v =0 . 60 c and u 0 =0 . 80 c (calling “downwards” [in the sense of ±ig. 38-31] positive). The relative speed is now the speed of the other particle as measured in
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Unformatted text preview: S : u = u + v 1 + u v/c 2 = . 80 c + 0 . 60 c 1 + (0 . 80 c )(0 . 60 c ) /c 2 = 0 . 95 c ....
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