1. You are in a rocket ship going faster and faster. As your speed increases and your velocity gets closer to the speed of light, which of the following do you observe in your frame of reference?
(a) Your mass increases.
(b) Your length shortens in the direction of motion.
(c) Your wristwatch slows down.
(d) All of the above.
(e) None of the above.
2. You are in a spaceship with no windows, radios, or other means to check outside. How could you determine whether your spaceship is at rest or moving at constant velocity?
(a) By determining the apparent velocity of light in the spaceship.
(b) By checking your precision watch. If it's running slow, then the ship is moving.
(c) By measuring the lengths of objects in the spaceship. If they are shortened, then the ship is moving.
(d) Give up, because you can't tell.