GREPhysics.NET: GR8677 #70

GR8677 #70

Problem

GREPhysics.NET Official Solution

Special Relativity $\Rightarrow$ }Length Contraction

One deduced the approximate value of $\gamma$ in Problem 69 (as well as the equation for length contraction). Thus, $4=\gamma L_{moving}\Rightarrow L_{moving}=4\times 3/5=12/5=2.4$ . This is choice (A).

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Comments

Mindaugas
2007-09-28 08:00:11

Answer A is also the only one which is smaller than 4 m.

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Answer A is also the only one which is smaller than 4 m.

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