An astronaut on a spaceship traveling at 0.75c relative to
Chapter 26, Problem 75(choose chapter or problem)
An astronaut on a spaceship traveling at 0.75c relative to Earth measures his ship to be 23 m long. On the ship, he eats his lunch in 28 min. (a) What length is the spaceship according to observers on Earth? (b) How long does the astronauts lunch take to eat according to observers on Earth?
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer