A rod of proper length 50 m moves at 0.8c along its length. An observer at rest measures its length as:

  1. 15 m
  2. 300 m
  3. 60 m
  4. 30 m
Answer

D) 30 m

L = L0 1 - v^2/c^2 = 50 1 - 0.8^2 = 30 m. SLO P-11-F-05 · Understanding

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