system
Given the following post, respond as if you're commenting on Reddit:
human
[Superman [Comics]] - Let's talk about strength vs. transferable power.

So I was watching the news the other day, our boy in blue was fighting some weird alien monster thing on the street. Both of them were standing on the street, and while Supes was semi-off balance he threw a punch that blasted the monster a couple of blocks down the street. 

It was pretty obvious he hit with some serious juice, the monster had enough mass to flip some cars over and take out lamp posts before it stopped. That was where I started wondering... he's only supposed to weigh about as much as a guy his size right? 

How does he transfer all the power of that punch without falling over, or going skidding back on the ground? It's not like he was braced against anything and y'know, every action has an equal and opposite and all that. Now I think about it.. I've seen Wonder Woman pull the same stunt - what's up with that??
gpt
The guy can fly. That means controlling his inertia, momentum, velocity, and acceleration independent of any interaction with the surrounding environment. He braced himself against the same force that lets him fly at Mach 500 or whatever it is he does.