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It's all relative (lemmy.ml)

submitted 2 weeks ago by yogthos@lemmy.ml to c/funny@lemmy.ml

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[–] JPAKx4@lemmy.blahaj.zone 5 points 2 weeks ago

Hey vsauce, Micheal here

[–] yjr4df0708@lemmy.ml 1 points 2 weeks ago (2 children)

assuming you're stationary and a rose is moving directly towards you, how fast would it have to be going to blueshift into looking blue?

what would happen on impact?

[–] BB84@mander.xyz 2 points 2 weeks ago* (last edited 2 weeks ago)

See https://mander.xyz/post/17123445 and in particular https://lemmy.blahaj.zone/comment/10334166.

[–] yogthos@lemmy.ml 1 points 2 weeks ago (1 children)

It would have to be moving at relativistic speeds, and given that F = mv² the velocity is the dominant factor when it comes to force. So, you'd probably get vaporized.

[–] BB84@mander.xyz 0 points 2 weeks ago

That is definitely not a correct expression for force. It doesn’t even have unit of force. Do better. smh