bureau44 t1_je9a0l2 wrote
Reply to comment by Quietm02 in eli5 What would happen if I had a big enough airplane to throw a ball around then the airplane turns while the ball is in mid air? by the_lost_cheeto
Sure it won't.
As with speed of light the answer is also no even if you put a third train on top of the second. But I fear I am not able to eli5 this.
Quietm02 t1_je9e5e7 wrote
You're right it won't. The short answer is that adding velocity together is an approximation that only works for low speeds. It doesn't work when you get near the speed of light.
This link explains better than I can https://galileo.phys.virginia.edu/classes/252/adding_vels.html
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