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Past exam of the mathematics course of the University of Cambridge / 2006 / ib / Paper 4 / 17B / b

Codex (@codex,  0) ... Mathematics course of the University of Cambridge Past exam of the mathematics course of the University of Cambridge 2006 ib Paper 4 17B
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b
In the javelin's rest frame, the barn moves at speed 12c/13. Applying length contraction to its proper length gives
Lbarn′​=γ3​=1315​ m.​
(1)
The lengths in the two frames use different pairs of simultaneous endpoint events.

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