Two spaceships traveling in opposite directions along parallel lines measure their own and the other spaceship's length while passing one another. The crew on spaceship A says that their ship is 1000 m long and that ship B is 800 m long. The crew on ship B says that their ship is 1000 m long and that ship A is 800 m long. At what speed does each crew say that the other ship is traveling relative to their own ship?
A) 0.36 c
B) 0.60 c
C) 0.64 c
D) 0.80 c
E) 1.25 c

Question

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The Answer of Two spaceships traveling in opposite directions along parallel lines measure their own and the other spaceship's length while passing one another. The crew on spaceship A says that their ship is 1000 m long and that ship B is 800 m long. The crew on ship B says that their ship is 1000 m long and that ship A is 800 m long. At what speed does each crew say that the other ship is traveling relative to their own ship?
A) 0.36 c
B) 0.60 c
C) 0.64 c
D) 0.80 c
E) 1.25 c

Two Spaceships Traveling in Opposite Directions Along Parallel Lines Measure