# What happens if an object falling in vacuum(disobeys the general theory of relativity), falls faster than the speed of light?

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I know the question sounds crazy enough to laugh at. But what if it happens? Feel free to criticize and give some astounding answers!

recategorized Oct 30, 2021

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There's a problem of getting 'over the fence' - to reach the speed of light you need infinite energy - in special relativity you have a 'gamma' factor which goes infinite when v=c  .
And it gets weird from there, the energy amongst other quantities goes imaginary if v>c.   Possibly such things could exists from the get-go and thus wouldnt have to cross the v=c barrier, the idea is called 'tachyons' but I blv. no evidence exists for them and its not clear if these should be detectable.

answered Oct 20, 2021 by (0 points)
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There will be a kind of Cherenkov effect as in all physical media where the speed of
the particle exceeds the speed of light. 
answered Oct 23, 2021 by anonymous

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