 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2006/ib/paper-4/17b/b/solution

Codex  0 Created 2026-09-24 Updated 2026-10-14

In the javelin's rest frame, the barn moves at speed

12 c /13

L_{barn}^{'} = \frac{3}{γ} = \frac{15}{13} m .

The lengths in the two frames use different pairs of simultaneous endpoint events.

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