Why can’t a bullet proof vest protect you from a knife stab?

Question

I mean, it’s designed to stop a bullet which delivers much more force than a human being can ever produce during stabbing

In: 784

Answer 1

Bullet’s tend to be wider than a sharp knife blade. That increase in surface area makes it easier for the Kevlar to prevent it from penetrating. Most vests however have inserts for plates which can protect against knife attacks/larger caliber rounds.