- #1
Peter G.
- 442
- 0
Hi,
I have attempted the following questions but I am unsure of my answers/method. Could you guys please help me through?
A super fast spacecraft is moving at a speed of 0.80c with respect to the observers on Earth. The spacecraft leaves Earth in May 2004 on its way to a distant solar system.
a) i) According to the observers in the spacecraft , 6.0 years have elapsed since leaving Earth. Calculate the time elapsed according to an observer on Earth
From what I understand, the observers on the spacecraft measure proper time. Hence, I performed 6 times the Lorenz factor, using 0.80c as my v. I got 10 years as an answer.
ii) Explain whether either measured time interval can be considered to be correct:
I know that, according to the theory of relativity, both measurements should be correct. This requires two marks though and I do not know how to complement my answer.
iii) Calculate the distance of the spacecraft from Earth according to an observer on Earth
Here lies my central doubt. Should I simply perform velocity multiplied by time (the time measured by observers on Earth) or should I find the distance traveled according to the observers on the spacecraft and apply the length contraction formula?
Thanks a lot in advance!
I have attempted the following questions but I am unsure of my answers/method. Could you guys please help me through?
A super fast spacecraft is moving at a speed of 0.80c with respect to the observers on Earth. The spacecraft leaves Earth in May 2004 on its way to a distant solar system.
a) i) According to the observers in the spacecraft , 6.0 years have elapsed since leaving Earth. Calculate the time elapsed according to an observer on Earth
From what I understand, the observers on the spacecraft measure proper time. Hence, I performed 6 times the Lorenz factor, using 0.80c as my v. I got 10 years as an answer.
ii) Explain whether either measured time interval can be considered to be correct:
I know that, according to the theory of relativity, both measurements should be correct. This requires two marks though and I do not know how to complement my answer.
iii) Calculate the distance of the spacecraft from Earth according to an observer on Earth
Here lies my central doubt. Should I simply perform velocity multiplied by time (the time measured by observers on Earth) or should I find the distance traveled according to the observers on the spacecraft and apply the length contraction formula?
Thanks a lot in advance!