If there is no resistance, will the next rain kill people?

Human beings have had an adventurous spirit since ancient times, especially in modern times, young people have played tricks and climbed rocks with bare hands.

Without any protective tools, dozens of high-rise buildings cross back and forth, using this form to attract attention and earn money, there was once a question that caused widespread discussion, if there is no resistance, will the next rain kill people? If there is no resistance, the first place that comes to mind is spaceThere is a vacuum environment, there is no rain at all, so when the rain falls to the ground, it has been evaporated, of course, aside from the vacuum, the next rain without resistance can directly penetrate people.

The rain that falls makes everything grow.

But if there is no resistance to the rain, it will be a big catastrophe, we know that the usual rain is falling from a height of several thousand meters, at this time because of various resistances make the fist of the rain into tears, when there is no resistance in the air, the speed of the rain falling at a height of several thousand meters will reach hundreds of kilometers per hour, want to smash a person easily, of course, this is just a hypothesis, our scientific explanation, if there is no resistance, then it is a vacuum, the rain will evaporate quickly, It doesn't fall to the ground at all.

Falling objects are a very dangerous thing, every year because of the loss of countless property, if you throw a kilogram of objects under a 20-meter building, if you hit the head of a pedestrian, it will directly injure your life, although the air has resistance, but he can not completely block the falling object, so we have to take care of ourselves, after all, this is a matter of human life, you have to go to jail if others are injured.

When I was a child, my favorite day was rain, and when it rained, I ran directly into the rain to get a good time, even if I would catch a cold the next day, because the feeling of the rain slapping on my face was like magic, which made people miss it all the time, of course, it didn't kill us, and it didn't rain on a rainy day.

Go out in the rain and pay attention to your body is the most important thing.

In the natural world of our earth, there is but it is precisely because of this that we will use these resources to create natural landscapes, and human beings will use these natural landscapes to create so many things, and also use their own scientific power to explain these phenomena one by one, which undoubtedly gives us a new understanding of the power of nature, or the science of the whole world. So some phenomena in nature, such as rain, are a very normal phenomenon. If there is no resistance from the air, it is obviously impossible to kill people in the next rain, and there are several reasons for this.

First, the particles of rain are very small. First of all, the first point is that the particles of rain are very small, about one raindrop of about one centimeter, and such raindrops may produce a moderate to heavy rain phenomenon when such raindrops fall. However, moderate to heavy rain has no effect on an injury to our human body, so when the earth does not have such resistance, the raindrops falling on our bodies will not have any harm to our human body.

Second, the shape of the raindrop can well cross the resistance of the air. Secondly, another point is that a shape with a low difference is elliptical, so such a shape can glide well over air resistance in terms of air resistance. This air resistance has no effect on the raindrops at all, so even if there is no drag force, it will be able to reach the ground with rapid acceleration.

Third, people's resistance is also quite strong. The last point is that a human resistance is also quite strong, when these raindrops fall on us, it will cause a slight pain to one of our human bodies. And our human body's **, its resistance to beating and beating is still much stronger than that of some animals.

But unless only a hail the size of a finger falls on our **, it will feel particularly painful, or a hail like a fist will hit a person's head to kill someone.

This phenomenon, it is not certain, there is no air resistance, and the way the paper falls is not necessarily, falling horizontally, or vertically? Paper has no gravity, and the speed is natural, so it won't do anyone any harm.

The impact of the rain is also relatively large, and there is no resistance. It can also kill people, and this kind of rain is also very powerful.

First of all, let's understand the cause of rain: when the water on the earth is irradiated by the sun's rays, it becomes water vapor and evaporates into the air. When water vapor encounters cold air at high altitudes, it condenses into small water droplets.

These small droplets are small, with a diameter of only millimeters and a maximum of millimeters. They are small and light, held in the air by updrafts in the air. It was these small droplets of water that gathered together in the air to form clouds.

For these small droplets to fall to the ground as raindrops, they would have to increase in size by more than 1 million times.

It relies mainly on two means:

One is the increase in condensation and condensation.

The second is to rely on the collision and growth of cloud droplets.

That is to say, when the gravitational force of the rain is greater than the buoyant force, it will drop and accelerate with an initial velocity of 0.

We know that the rain is also subject to friction from the air during the fall. The air at high altitude is thin and the air above the surface is denser, that is, a process of increasing density from high to low.

At this time, the friction force increases, the buoyancy increases, but the gravitational acceleration also increases, so as for how to accelerate the speed, it has to be detected by actual data. But that's not the main reason.

The second point is that the quality and density of rainwater are very small, which is the main reason. Quality is also a factor that determines kinetic energy. Although density does not determine kinetic energy, because the density is not large, when it comes into contact with the human body, the rainwater will be flattened, increasing the contact area with the human body.

Suppose m*v*v2 = f* increases, f becomes smaller. Why is the second point the main reason? According to the Leaning Tower of Pisa experiment, we can see that a lead ball as large as a raindrop falls exactly the same as a raindrop, both in terms of acceleration and velocity.

If you change to the same big shot put, I promise it will be over.

All the factors are combined with the actual experience: the rain does not kill people.

Because the water has the characteristics of shape and the quality of the rain is not large, and the water density is not large, it cannot produce enough kinetic energy to kill people.

Hail said: Don't talk about people, even if it's a car, I will still smash it. But my density isn't as heavy as the rain.

Rain kills people by looking at the energy of the raindrops, which are related to the energy and mass velocity. When a raindrop falls in the air, the square of the velocity is proportional to the air resistance, so the velocity does not increase all the time, and the mass is of course small. So it's fine.