Hey I'm just wondering how much force/energy is required to punch Someone so hard that the person is sent flying at the speed of sound

Also what can you compare the force/energy too like for example is it comparable to a TnT explosion or something?

Edit: hypothetically assume these beings were superhuman that can survive such attacks

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    $\begingroup$ If you are punching a human being that hard, whatever you're hitting them with will go through them, not send them flying. $\endgroup$ – Jorgomli Mar 4 at 17:30
  • $\begingroup$ I think you need to provide some more details. As already pointed out, a punch would smash through a person. $\endgroup$ – L.Dutch Mar 4 at 17:31
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    $\begingroup$ E = (mv^2)/2. Do the math. $\endgroup$ – Renan Mar 4 at 17:37
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    $\begingroup$ I'm pretty sure at those energies a human body would not so much "fly" as "splash". $\endgroup$ – plasticinsect Mar 4 at 18:14
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    $\begingroup$ @user45266 - That's a push not a punch! It also require very long arms! $\endgroup$ – chasly from UK Mar 5 at 9:44

Suposing speed of sound of 340m/s (sea height normal pressure) a 100kg man (because a 153cm tall superhuman doesn't really cut it), which is a good suposition for a strong, tall man, you'll need about 6 Megajoules of energy (I've rounded up to account for that hard mistress, 2nd law of thermodynamics, and because you need to surpass the speed of sound, even if just by a little bit).

How to deliver this energy without destroying parts of the body of both the puncher and the punched, and without loosing any more energy in heat, spin or other possible non-intended consequences is left as an exercise to the OP.

Also, if you want to compare it to an explosive, that's like a little over a kilogram of TNT.


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