Shoot at the sky. Where's the bullet? Will you fall and hit yourself?

I believe that friends who like to watch war movies will always see such a scene. In order to destroy the roaring plane, the soldiers shot into the sky with machine guns and won. This kind of scene is common in many war movies, and even attracts a large number of netizens to vomit and shoot in the air. Won't the bullet fall and hit itself? As a result, these film and television works were labeled as drama.

Then shoot into the air. If we stand still, will the bullet really hit us? If you hit it, will it be dangerous?

How was the bullet fired?

If you want to know whether a bullet shooting into the sky will fall and hit you, you must first know how the bullet is fired.

As many people know, the firing principle of musket is that in a closed space, the powder instantly detonates to generate a large amount of heat, so that the metal warhead can be launched and the enemy can be killed remotely. Early thermal weapons, such as Hongyi cannon and porcelain in Ming and Qing dynasties, all made use of this principle.

Because of its long range and great power, it has produced an effect that cold weapons can't achieve. But this simple and primitive design is obviously rough, so modern thermal weapons have been improved on the basis of this simple theory.

For example, using an excitation device, flint is changed from an external match rope into a thimble and hit at the bottom of gunpowder, and kinetic energy is converted into heat energy to ignite the primer. In order to make the bullet shoot out of the gun bore as straight as possible, the barrel is lengthened and the inner bore of the barrel is treated with thread description. So the bullet is extremely close to a straight line and keeps spinning at the moment it hits the muzzle.

In addition, modern firearms also automatically load the powerful force generated by bullets in the gun bore, which greatly speeds up the number of bullets fired by guns in a short time, thus generating powerful firepower to suppress the enemy.

The bullet didn't hit the target smoothly.

After the above explanation, I believe everyone has a deep understanding of the principle of gun firing bullets, so will the bullets hit the target after shooting?

The answer to this question is uncertain. I believe everyone knows that our vision is limited, and there will be some deviation in looking at distant targets. So many times we aim, but the impact point of the bullet is not ideal.

In addition, the complex external environment makes it difficult for the bullet to keep a relatively straight flight state all the time, but to make a relatively straight motion with a very small arc. This arc will increase with the increase of moving distance and time. Secondly, the bullet will be affected by air resistance, wind direction, air humidity and other factors during its movement. After a period of time, the bullet will land due to lack of power.

Therefore, no matter which direction the bullet is fired, its trajectory is not a pure straight line, which should be considered comprehensively.

Shoot at the sky, will the bullet hit you?

In front of us, we learned the trajectory of the bullet. Let's analyze whether a bullet fired at a vertical angle of 90 degrees will hit itself in the same place.

You can be sure at first, but the probability is extremely small. If the bullet really hits you, then if you still have breath, I suggest buying a lottery ticket. After all, there is no one.

We know that at the moment when the bullet hits the gun bore, the rifling works in a spiral motion to stabilize the bullet trajectory. Because the bullet is vertically upward, the gravity it receives is downward, so we ignore the ballistic deviation caused by gravity.

Then we assume that the firing is carried out in clear and windless weather, ignoring the influence of wind direction and air humidity on the bullet. After ignoring everything, our bullet still won't fall to its original place because of its spiral motion.

Anyone who has played with a gyro knows that the kinetic energy of the gyro is exhausted and it will become crooked when it is about to stop moving. So is the bullet. Because the bullet is subjected to vertical downward gravity and air resistance in the upward process, it will move like a gyro after a period of time because of the exhaustion of kinetic energy, that is, the bullet begins to swing around the center of mass, which is what we call nutation effect.

This phenomenon is often difficult to see at ordinary times, and it will only appear when we shoot vertically into the sky. Because of the nutation effect, the probability of a bullet hitting itself on the ground becomes very small. In addition, because the earth also rotates, under the dual influence of nutation effect and earth rotation, the probability of a bullet hitting itself is very small.

But as we said before, this is the result of ignoring the wind direction and air humidity. Together with these influencing factors, I believe that the deviation of bullets will be greater in most cases. Of course, if it's just bad luck and the wind speed is just right, maybe the bullets will fall on you, but most of them are on your shoulders and neck, so it's unlikely to fall directly on your head.

What are the consequences of falling bullets hitting yourself?

If you are unlucky and a bullet falls from the sky and hits you, don't panic when buying lottery tickets, because the bullet is not fatal at this time. At this time, some people may think, isn't there news that graduation photo threw his hat and fell down and got hurt? Why is the bullet flying higher and faster instead of being fatal when it falls?

First of all, it must be clear that the quality of bullets and hats is different, and there is a big difference. Although anyone who has studied physics knows that under the action of gravity, the speed at which an object falls has nothing to do with its weight, but at the same speed, a heavy object can often produce more force.

Therefore, with the weight of the bullet itself, after losing its powerful kinetic energy, the force generated by falling is not fatal, but the injury is indeed inevitable. Of course, if the bullet you are using is of a particularly large caliber, believe me, the man in black will carry the coffin.

How to avoid accidents caused by falling bullets?

Personal opinion on how to avoid the above problems, don't die.

Of course, this kind of thing is sometimes unavoidable. Most of the time, it is necessary to fire a gun into the air. For example, in 2007, in order to celebrate the national team's victory over Vietnam in the Asian Cup, Iraq in Central Asia shot into the air, but many people were injured and even three people died.

So besides trying not to celebrate this way, we need to take some effective measures to prevent it, such as choosing some empty areas or replacing bullets with harmless blank ammunition. Of course, the most effective thing is to ban guns by the whole people and strictly control guns.

The world is beautiful, I hope to cherish it! Although we live in a very strong and safe country, there will be no injuries caused by falling bullets, but we should also pay attention to throwing things at high altitude or throwing some dangerous things ourselves in our lives. For the health and safety of ourselves and others, I hope that each of us can shoulder the due responsibilities of citizens.