The closest known star to our solar system is Alpha Centauri,which is approximately 4.30 light years away. Spaceship A, with aconstant speed of 0.800c relative to the Earth and a proper lengthof 100 m, travels from Earth to this star. Spaceship B with aconstant speed of 0.600c relative to the Earth travels from Earthto this star.
(a) How much time would elapse during Spaceship A’s trip on a clockon Earth?
(b) How much time would elapse during Spaceship A’s trip on aclock on Spaceship B?
(c) How long is Spaceship A for an observer at rest on SpaceshipB
