Question 9 (6 marks) (a) An astronaut took a space travel at nearly constant speed. The astronaut in the spaceship measu
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Question 9 (6 marks) (a) An astronaut took a space travel at nearly constant speed. The astronaut in the spaceship measu
Question 9 (6 marks) (a) An astronaut took a space travel at nearly constant speed. The astronaut in the spaceship measured times with an accurate watch. When he returned to Earth, he claimed to spend 6 years in space travel. However, the control centre on the Earth knew that he actually left the Earth for 12 years. Determine the speed of the spaceship. (3 marks) (b) Rocket A travels to the right and rocket B travels to the left, with 0.5c and 0.7c respectively, relative to the Earth. What is the velocity of rocket B measured from rocket A? (3 marks)