The length of a spaceship is 14 m when it is at rest. If the spaceship travels by you with a speed of 0.80c, what length does it appear to you?
A)
6.3 m
B)
8.4 m
C)
18 m
D)
20 m
E)
22 m
B
Physics & Space Science
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A. 
B. 2
C. 4
D. 
E. 1
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