Breaking the speed of light?

  • #1

Main Question or Discussion Point

2 objects are traveling in opposite directions from each other with more than 0,5c. Would an observer watching them perpendicular to their trajectory see that they are moving faster than c away from each other, or is there something that will "stop" this?
 

Answers and Replies

  • #2
jtbell
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IN that observer's reference frame, the two objects' separation does increase at a rate greater that c. Relativity does not prevent the rate of separation of two objects in a third reference frame from being greater than c.

What relativity does prevent is each object going faster than c in the other object's reference frame.
 
  • #3
Thanks, that was exactly what I was uncertain about. You answered my question in the best possible way.
 

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