How fast does a rocket have to move relative to an observer for its l – McqOptions

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1.	How fast does a rocket have to move relative to an observer for its length to be contracted to 95% of its original length?
A.	0.5 c
B.	0.4 c
C.	0.3 c
D.	0.2 c
Answer» D. 0.2 c

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