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A Moving Object's Mass Is Twice Its Rest Mass

Question 77

Multiple Choice

A moving object's mass is twice its rest mass. Its length (in the direction of travel) must therefore be


A) one-half its proper length.
B) twice its proper length.
C) one-fourth its proper length.
D) four times its proper length.
E) A moving object's mass is twice its rest mass. Its length (in the direction of travel) must therefore be A) one-half its proper length. B) twice its proper length. C) one-fourth its proper length. D) four times its proper length. E) times its proper length. times its proper length.

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