Question

why does a sharp knife cut better than a blunt one

Answer 1

Because pressure is inversely proportional to area.so sharp knife have very less area so it cut the things easily but the blunt knife have more area than the sharp knife so it do not cut the things easily

Answer 2

hey dear
here is your answer

sharp knife cut better than a blunt knife

Explanation - when area increases pressure decreases and when force increases pressure increases ..
that means pressure is directly proportional to the force and inversely proportional to the area .
when knife is blunt then it have greater area but same force .. so pressure decreases
and when knife is sharp it has less area and more pressure so it cut objects easily.
hope it will help you