試題詳解

53. According to observers on the Earth frame, a planet is 30 light-years away from Earth. If we plan to send a spaceship traveling at a constant speed of 0.6 c to explore the alien planet, which of the following statements is false?
(A) The time the astronaut on board will take to reach the alien plant is less than 50 years.
(B) The distance the astronaut on board travels to reach the alien plant is less than 30 light years.
(C) For a clock that is stationary to the Earth frame, recording a I-second duration by the Earth's observer, the astronaut observes a longer duration than 1 second.
(D) For a clock that is stationary to the spaceship frame, recording a l-second duration by the astronaut, the Earth's observer observes a longer duration than I second.
(E) None of the above is false.