- #1
chewtoy929
- 10
- 0
I'm having a bit of trouble understanding relativity, and would like some help with the following problems:
1. A spaceship passes a stationary observer at a speed that is 80% the speed of light. At rest, this ship is 65m long. What does the observer say about the length of the spaceship? How does this length compare to that
measured by an astronaut inside the spaceship?
2. A spaceship capable of flying 50% of the speed of light, travels from Earth to Proxima Centauri, the star closest to the Earth other than our own Sun at a distance of 4.3 light years. What does an astronaut inside the spaceship have to say about the length of time it takes to reach Proxima Centauri? How does this time compare to that measured by an observer stationed on Earth?
3. On Earth an astronaut has a mass of 75 kg. If they are in a spaceship that is flying at 75% of the speed of light, then what does a stationary observer have to say about the astronaut's mass? What does the astronaut have to say about their own mass?
1. A spaceship passes a stationary observer at a speed that is 80% the speed of light. At rest, this ship is 65m long. What does the observer say about the length of the spaceship? How does this length compare to that
measured by an astronaut inside the spaceship?
2. A spaceship capable of flying 50% of the speed of light, travels from Earth to Proxima Centauri, the star closest to the Earth other than our own Sun at a distance of 4.3 light years. What does an astronaut inside the spaceship have to say about the length of time it takes to reach Proxima Centauri? How does this time compare to that measured by an observer stationed on Earth?
3. On Earth an astronaut has a mass of 75 kg. If they are in a spaceship that is flying at 75% of the speed of light, then what does a stationary observer have to say about the astronaut's mass? What does the astronaut have to say about their own mass?
