Thank you.
Okay, so we can't just divide time (2 seconds) by γ. A and B should agree on rate (w.r.t. each other) and distance from each other, so they should agree on how long until they meet (rate ⋅ time = dist). But dividing by two different γ (using v or u) gives two different lengths, which...
This is an IB problem from November 2017. Two rockets are separated by 6E8m (2 sec x c, or two light-seconds), w.r.t. Earth, and are approaching Earth from opposite directions. Rocket A approaches from left at 0.6c. Rocket B approaches form right at 0.4c.
According to Earth, when do they...
So we all know the Coriolis effect isn't demonstrated in a bathtub or toilet. Are there any videos online of the size of pool needed to demonstrate it? I saw one in grad school--black and white from the '50s--an indoor, above-ground pool with a drain in the center, allowed to settle for a week...