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An observer on the earth sees a spaceship
approaching at a velocity of 0.40 c. The
spacecraft then launches an exploration
vehicle that, according
to
the earth
observer, approaches at 0.90 c. What is the
velocity of the exploration vehicle relative to
the spaceship?
O A. 0.31c
B. 0.96 c
C. 0.37 c
O D. 0.78 c
E. 0.5 c

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