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The challenge as posted two weeks ago, in one picture:
1. How far is station Blue from station Green (in station coordinates)?
2. What will station Blue's date read when Pam's ship catches up with Jim's?
3. What will Pam and Jim's respective dates read as they pass station Blue together?
There were only two takers and both got it right. Randall got it right on the first try (see http://cr4.globalspec.com/comment/85857/Re-Space-Time-Challenge).
Scruffy got it right on his second (http://cr4.globalspec.com/comment/85334/Re-Space-Time-Challenge).
Congratulations guys and check your CR4 email for the download link.
As Randall correctly noted, the relativistic subtraction of velocities equation given in the 'tips' was a red herring - not required in this problem. It was simply Galilean/Newtonian relativity with a bit of relativistic time dilation thrown in for question 3...
Regards
Jorrie
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