Question

You are riding in a spaceship that has no windows, radios, or other means for you to observe or measure what is outside. You wish to determine if the ship is stopped or moving at constant velocity. How can you do this?

a) You can determine if the ship is moving by determining the apparent velocity of light in the spaceship.

b) You can determine if the ship is moving by lying down and measuring your height. If you are shorter than usual, the ship is moving.

c) You should give up because you have taken on an impossible task!

d) You can determine if the ship is moving by checking your precision time piece. If it's running slow, the ship is moving.

Answer 1

    According to you (in the spaceship or from spaceship frame of reference) , your clock runs exactly the same as it did when you were at rest on Earth, all objects in your ship appear the same to you as they did before, and the speed of light is still c. There is nothing you can do to find out if you are actually moving.

So the correct option is You should give up because you have taken on an impossible task!