Question

4) A spaceship leaves earth (event A), travels to Alpha Centauri, and then returns to earth exactly 15.0 y later (event B) with respect to clocks on the earth. Alpha Centauri is 4.3 ly from earth. The spaceship's acceleration time is so short that it spends virtually all of its time traveling at a constant speed. a) If the spaceship travels straight towards Alpha Centauri and back again, what is the time between events A and B as measured by a clock on the spaceship? b) If the spaceship travels in a circular orbit that intercepts Alpha Centauri, what is the time between events A and B as measured by a clock on the spaceship?

Answer 1

1.22 2.301 rid By 2.30) Clocuc on S pacuhi