How does Kevlar stops bullets?
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Kevlar stops bullets because it has an incredibly high tensile strength. Tiny little threads of Kevlar can withstand very high levels of force, similar to that of steel except much lighter. The Kevlar is woven into a thick pad of filaments, making the bulletproof vest. This means when the bullet hits the vest, it can’t pierce through the Kevlar (mainly true for pistol rounds which have blunt tips). The Kevlar stops the bullet, but not the kinetic energy. You end up with one hellova bruise, but that’s better than a bullet wound
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