Relativistic Velocity Addition
Two spaceships, A and B, travel in opposite directions along the x-axis. Relative to an inertial reference frame, spaceship A has a speed of 0.6c and spaceship B has a speed of 0.8c. What is the speed of spaceship B as measured by an observer in spaceship A?
A
0.875c
B
0.946c
C
1.4c
D
0.2c
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