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Besides, if you really needed those kinds of speed, you’d obviously have to calculate with relativistic formulas. Energy is asymptotical at the speed of light.

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xkforce@lemmy.world ⁨8⁩ ⁨months⁩ ago
150 km/sec is not relativistic and even if it were, at no point would that object need to or could exceed the speed of light. Its a fundamental limit that cant be broken.

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- frezik@midwest.social ⁨8⁩ ⁨months⁩ ago
  Setting aside the correctness in OP for the moment, what’s being said here is that you don’t actually need to break lightspeed. The foot would have to be moving asymptomaticly close to lightspeed, but not passing it. OP used an equasion that works classically, but we’re in territory where that model breaks down.
  
  But if the math doesn’t work out that way, anyway, then whatever, classical equasions are fine.
  
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- dQw4w9WgXcQ@lemm.ee ⁨8⁩ ⁨months⁩ ago
  Yeah, I was refering to the OP’s calculated result in that it’s incorrect not only by incorrect math, but also incorrect physics.
  
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