Systems S and S' Are in Relative Motion as Indicated

question 46

Multiple Choice

Systems S and S' are in relative motion as indicated in the sketch. Metersticks and clocks in S' agree with metersticks and clocks in S when t = t' = 0. An observer in S' notes that two events occurring at x₁' and x₂' are simultaneous; i.e., Δx' > 0 and Δt' = 0 for the observer in S'. An observer in S, seeing the same two events, may find that

• A) Δx > Δx' and Δt > 0.
• B) Δx > Δx' and Δt = 0.
• C) Δx = Δx' and Δt = 0.
• D) Δx < Δx' and Δt = 0.
• E) Δx < Δx' and Δt > 0.

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