Thank you very much for your explanation, I think I am getting into it. I found out answers to the problems A and B and I hope they are correct. Would you mind checking them? However, I'm still quite stuck with part C.
For part (A), let's start with P's frame of reference. I'll be using ly...
Hi, I am new to this forum so hello to everybody. I have this problem to solve:
Homework Statement
Q is moving away from P at speed 4/5 c. After 3 years (in Q's frame of reference) he turns around (assuming that turning takes no time) and is moving back to P at speed 4/5 c.
What are spacetime...