An ant falls from a height of 1, meters at the speed of free fall. Will it hurt people?

If an ant accidentally follows the plane to a height of more than 1, meters, and then accidentally falls from the height of 1, meters at the speed of free fall, will it be killed? Free fall

When it comes to ants falling from a height of 1, meters, everyone will think of a funny joke: A group of doctoral students are discussing in the group whether a small raindrop falls from a height of 1, meters at the speed of free fall, so can this small raindrop hit people? As a result, some people say: Didn't you wet the rain? Then he was removed from the group chat.

At first, this funny joke satirizes the fact that doctoral students don't understand the little common sense of life, but it is only after that that it is necessary to find out whether small raindrops can hit people when falling from a height of 1, meters:

According to Baidu Encyclopedia, the meaning of free-fall fitness exercise is: the speed of objects falling gradually, that is, the initial speed is ; In the whole process of falling, the object will not be subjected to additional external interaction except for the effect of external force; In the case of vacuum pump, when all objects are doing free fall fitness exercise at the same relative height, the landing time is the same.

Taking ants as an example, the free fall velocity formula of ants from falling objects at a height of 1,m is:

, in which g = 9.8m/s 2. For better calculation and convenience, it is written here as 1m/s 2. According to calculation, the falling velocity of ants over 1,m is equal to 447m/s, which is faster than that of high-speed trains. The rapid speed has prompted them to get their potential. If they hit someone, it may indeed be possible to hit the other side.

Even if ants fall at the speed of free fall, they will hit people. I don't know that people didn't see anything like that in practice. Why?

In fact, this is because ants will continue to suffer from frictional resistance when they fall from a height of 1, meters. In fluid mechanics, there is a formula that can be used to calculate the falling speed of an object with less mass, which is

the terminal equipment speed. The formula is calculated as, where m means mass, g means the main force acceleration, that is, 1m/s 2, Cd is the resistance coefficient, p is the density of air when the object falls, and a is the expanded area of the object. Vt means the speed of terminal equipment, that is, the speed of ants falling from 1 meters high.

Finally, the conclusion is that the speed of ants falling is extremely low, which is similar to other winds of Grade 1 or 2, and it is not easy to hurt people at all.

In fact, precipitation is the same as ants, and their quality is very small. When they suffer from frictional resistance, they will continue to rub with gas, so that part of the water will be gasified again and rise into the sky. And solidified into small water droplets again in the sky, forming clouds, which is why there is so much water in the clouds, but it has not been smashed out. Clouds that can cause precipitation, most of which are small raindrops with large diameters, can fall to the surface of the earth before being completely gasified, resulting in precipitation. What is the expectation of being rescued after ants fall?

Although the speed of ants falling from 1, meters to the ground is not satisfactory, the expectation of ants being rescued is not too great.

First of all, it's a matter of time, because the light weight of ants, coupled with the wind speed effect of the earth, will make ants unable to land on the road and then be blown up or blown away. So that it can't fall to the surface of the earth for a long time, which leads to death.

In addition, there are four oceans on the earth, and the ocean area is vast, accounting for about 7% of the earth's land area. If ants fall into the deep sea, the expectation of being rescued may be even smaller. In addition, ants can't blend in with all the climate on the earth. If they fall into their nemesis gathering place, or in deserts and polar regions, their chances of being rescued are also very small. Only when it happens to land in an area similar to its place of origin can ants survive here again. Summary

There are many fine objects in the air, such as smoke, volcanic magma, etc. They often don't fall to the surface of the earth, because they will be harmed by the sliding friction of gas when falling. The sliding friction of gas can slow down the speed, so that they will not reach the surface of the earth too fast.

This also prevents microbes on the earth from being smashed all over by tiny objects. After all, there are many tiny dust particles in the earth's atmosphere.