Why does a sharp knife cut object more effectively than a blunt knife ?

Why do we use knife to cut fruits ?

Why do ultrasound waves produce images of objects inside the body more effectively than audible sound waves do?

A very sharp knife cuts better than a blunt one, Why?

Explain the Why does a sharp nail easily penetrate wood, but not a blunt nail?

Why do you use sharp edged knife to cut a fruit?

We can cut vegetables easily with a sharp knife as compared to a blunt knife. Why ?