13. A rocket ship of rest length 100 m is moving at speed 0.8c past a timing device that records the time interval between the passage of the front and back ends of the ship. This time interval is: a. 0.20 μs b. 0.25 μs C. 0.33 ms d. 0.52 μs e. 0.69 μs 14. How long would the interval in Q13. Be as measured on board the spaceship? A. 0.25 μs B. 0.35 μs C. 0.42 μs D. 0.42 ms E. None of the above