A spaceship leaves Earth at a high velocity and travels to a distant planet. The observers on Earth state that it took 14 years for them to make the trip. However, the people on the spaceship say it took them 5 years to make the trip.
a) How fast is the spaceship traveling?
b) How far away is the planet according to the Earth observers?
c) Partway during the trip, a small capsule is sent back to Earth at a speed of 0.95c with respect to the spaceship. How fast is the capsule traveling according to the observers on Earth?
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