Change in position/t greater than speed of light?

Join the discussion
Registration is free. Start your own thread to ask a follow-up.
2 replies · 2K views
howabout1337
Messages
30
Reaction score
0
Is it possible to travel further in distance (position 2 - position 1) over a unit time more than that of traveling at the speed of light? This is not wormhole, or anything that sort, just change in position.

I am coming from the fact that a moving particle can exist on a moving object.
 
Physics news on Phys.org
Same answer as in your previous thread:

Now, relativity says you must use the formula (u+v)/(1+uv/c2)
.
If an object is moving with velocity u, and carrying a moving object whose velocity is v, you don't simply add u + v. The relativistic law of velocity composition guarantees that the speed of light cannot be exceeded.
 
howabout1337 said:
Is it possible to travel further in distance (position 2 - position 1) over a unit time more than that of traveling at the speed of light?
The short answer is "No". Bill_K showed why above. Look at the formula he posted. If u and v are both less than c then the result is always less than c. If either u or v is c then the result is c, regardless of what the other one is.