Question: If the two spacecrafts in Problem 28 are initially 5.0 1010 m apart according to an observer on the Earth, how long does it

If the two spacecrafts in Problem 28 are initially 5.0 × 1010 m apart according to an observer on the Earth, how long does it take for them to meet as measured by the Earthly observer?


Data From Problem 28

Spacecraft 1 is moving at speed 0.85c and is catching up with spacecraft 2, which is moving at speed 0.75c (both measured by an observer on the Earth). What is the speed of spacecraft 2 as measured by the pilot of spacecraft 1?

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