Velocity Addition: Two spaceships approach Earth from the same direction. One has a speed of 0.21c and the other a speed of 0.34c, both relative to Earth. What is the speed of one spaceship relative to the other?
A. 0.13c
B. 0.14c
C. 0.15c
D. 0.16c
E. 0.18c
Answer: B
Physics & Space Science
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