# Bullet

During the First World War a very unusual incident occurred with the French pilot. The pilot noted that near his person movement with some small thing. Thinking that it was an insect, he quickly grabbed it with his hand. Imagine the astonishment of the pilot when it turned out that he had in his hand... a German military bullet!

This resembles the stories of the legendary Baron Munchausen, who allegedly caught cannon balls with his hands? Meanwhile, in the message about the pilot who caught the bullet, nothing is impossible.

The bullet does not all the time move with its initial speed of 800-900 m per second. Due to air resistance, it gradually slows down its flight and by the end of the way - at the outset - makes only 40 meters per second. And this speed was then developed by the plane. Hence, it can easily happen that the bullet and the aircraft will have the same speed; then in relation to the pilot, the bullet will be immovable or will move hardly noticeably. It will not be worth it to grab her by the hand, especially in the glove, because the bullet moving in the air is very hot.

The initial velocity reached by the bullet is the speed of its movement at the muzzle of the barrel. For the initial speed, the conditional velocity is assumed, which is somewhat greater than the muzzle velocity and less than the maximum speed. It is determined empirically with subsequent calculations. The muzzle velocity strongly depends on the length of the barrel: the longer the barrel, the more time the powder gases can act on the bullet accelerating it. For pistol cartridges, the muzzle velocity is approximately 300-500 m/s, for intermediate and rifle rounds 700-1000 m/s. As the initial speed increases, the range of the bullet, the range of the direct shot, the killer effect and the bullet effect of the bullet increase, and the influence of the external conditions on its flight decreases.