During World War I,Germany used a "Big Bertha" cannon to hurl shells into Paris 30 miles away.This gun also had a long barrel.What is the reason for using a long barrel in these guns?

Question

Quizplus · Accepted Answer

A long barrel allows the expanding gases from the gunpowder to act for a longer time, thus increasing the velocity and range of the projectile. This is known as the principle of conservation of momentum. Additionally, a longer barrel allows the shell to achieve greater stability and accuracy during flight, reducing the likelihood of it veering off course.

During World War I,Germany Used a "Big Bertha" Cannon to Hurl