- #1

sydfremmer

- 11

- 0

I am a graduate student in Mathematics and not physics, so please bare with me. Also, I know that a similar topic has been discussed before but i could not get a clear answer from reading the previous posts.

And here is the question i have been wondering about:

Suppose we have two particles, p1 and p2, traveling in opposite direction, each with speed 0.6c relative to point "A".

Question 1:

After 1 year, the distance from A to p1 will be 0.6 lightyear, and the distance from A to p2 will be 0.6 lightyear. Thus the distance between p1 and p2 will be 1.2 lightyear - right?

Question 2:

If so, p1 and p2 have traveled away from each other with speed greater than the speed of light. How can that be if, as i understand, no objects can have a relative speed larger than the speed of light?

I am looking forward to see your replies :)