Final answer:
The extra width at the tip of a smaller knife increases its cutting efficiency by exerting a higher pressure with the same amount of force.
Step-by-step explanation:
The extra width at the tip of a smaller knife increases its cutting efficiency.
A sharper knife has a smaller surface area at the cutting edge, which leads to a higher pressure being exerted with the same amount of force.
This higher pressure allows the knife to cut through materials more effectively.