Physics, Astronomy & Cosmology / Re: What Would Happen To A Thrown Ball On A Train Travelling 10mph Less Than 'C' ?« on: 28/07/2020 19:52:46 »
So, as it passes, you notice a boy throwing a ball the same direction as the travelling train and he throws the ball at 20mph !! VOILA !!...the ball is now travelling 10mph faster than the speed of light !!If he throws it at 20mph, then it is moving at 20mph, almost stopped.
If he throws it 20mph relative to the train, then you have to use Einstein's light velocity addition formula: https://en.wikipedia.org/wiki/Velocity-addition_formula#Special_relativity
So the ball is essentially still going 10mph less than c relative to the guy on the platform, with negligible additional velocity.
Well there goes my Noble prize ! I was building a cabinet and everything too !! hurrumpth !!