Comments of chapter undefined of My Hero Academia: Altered World

no, what i meant was izuku can hit at one hundred percent without breaking his body, it doesn't take a away the strain of having too much power than his body can handle. the reason why izuku breaks his arms is because of the impact. For every action, there is an equal and opposite reaction. That’s why car crashes are so dangerous. The speed of the moving car isn’t the problem, it’s the sudden and violent change from go to stop. When you ram into a wall at 60mph, from a physics perspective, the wall might as well have rammed into you at the same velocity. his armor absorbs the feedback of the force of his punch, therefore nullifying the damage done to his body. It was also because of this that izuku didn't break his arms when he punched that nomu, because of its shock absorption