Physics, 27.07.2021 22:40 SavyBreyer

An observer on Earth sees Planet X to be stationary and also sees a rocket traveling toward Planet X at 0.5c. The rocket emits a pulse of light that travels outward in all directions. According to an observer on Planet X, how fast is the light pulse traveling toward them? a) 2c/3
b) c/2
c) 2c/3
d) 5c/6
e) c

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An observer on Earth sees Planet X to be stationary and also sees a rocket traveling toward Planet X...