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Hello! As we all know, people can be seriously injured if they fall from a building without falling to their deaths, but have you ever noticed why ants fall from a high place unharmed, and pilots can also be unharmed when parachuting, and do you know the mystery?
The physics of life tells us that all objects will be affected by air resistance when moving in the air, and the size of the resistance has a great relationship with the surface area of the object and the air in contact, the smaller the object, the greater the ratio of its surface area to gravity, that is, the easier it is to balance the resistance with gravity, so that the object does not fall faster and faster, that is, the tiny object can fall at a very slow speed in the air, so the ant will fall slowly when it lands, and will not fall to death. On the contrary, the larger the object, the smaller the ratio of its surface area to gravity, the more difficult it is to balance the drag with gravity, and the faster the object will fall, so people will fall from tall buildings and even fall to their deaths.
Even so, we can imagine a way to make the ant fall to death if it falls from a height: put the ant in a long glass tube of vacuum, and when the ant falls in this long glass tube of vacuum at a normal speed, because there is no air resistance, it cannot balance with gravity, resulting in a faster and faster descent, and if the vacuum glass tube is long enough, the ant may fall to death. In the same way, when the pilot parachutes, because the open parachute increases the resistance, it balances with the gravity of the pilot, so that the pilot does not land too fast and can reach land safely without falling and injuring.
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The hard shell of the body counteracts the force of the fall, and the impact pressure is reduced by the effect of air resistance.
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Probably not, his weight is small, and the friction of the air should be able to offset some of it.
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Obviously not, if it's too high, you might starve to death!
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<> "Why Ants Fall from a High Place, Only Fall and Don't Die."
At 18:41 p.m. on April 1, 2003, a person fell from the 24th floor and died due to ineffective rescue. Everyone knows that he is Leslie Cheung. Everyone also knows that if an ant falls from the 24th floor, it will be safe and sound. Why is that?
Any object moving in the air is affected by the air resistance, and the magnitude of the resistance has a lot to do with the surface area that the object is in contact with the air. The smaller the object, the greater the ratio of its surface area to gravity, i.e., the easier it is for the drag force to balance with gravity. In other words, an object with a small surface area experiences less friction but weighs less.
Friction cancels out a lot of gravity, so that the object does not descend faster and faster. That is, tiny objects can fall at a very slow speed in the air, so the ants are slow when they land and will not fall to their deaths.
On the contrary, the larger the object, the smaller the ratio of its surface area to gravity, the more difficult it is to balance the drag force with gravity, and the faster the object will fall. Therefore, as an individual with a large weight, Leslie Cheung fell from a tall building, the risk factor is very large, and death is reasonable. If an elephant falls, it is estimated that there is no need to "rescue".
But if there is no air, when the ant falls at the usual speed, because there is no resistance, it cannot balance with gravity, and the speed of descent will become faster and faster, and the ant may also fall to death.
In other words, if Leslie Cheung jumps down with a parachute bag, because the open parachute increases the drag and balances with the gravity on him, then he can reach land safely without being injured, let alone falling to his death.
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What are Ants? It belongs to the order Arthropods of the phylum Arthropods. There are more than 9,000 known ant species in the world, including 283 species in 21 subfamilies.
There are more than 600 species of ants in China. Recently, a number of new species of ants have been discovered, and they reproduce asexually. Ants have a long lifespan, with one ant living from a few weeks to thirty-seven years, while the other can live for more than a dozen or even decades.
An ant nest can grow in one place for 50 years or even more. The reason why ants don't die when they fall from a high place is well known, a person who falls from a building can also be seriously injured, but the key eye ant did not suffer any harm when it fell, do you know the secret? A:
Of course not. The greater the ratio of the surface area of an object to gravity, the less resistance to its surface, and the faster the object will fall. That is, a tiny object can fall in the air at a very small rate, so when the ant lands with a small velocity, it will not fall to its death, but when it falls on the ground, its gravity will decrease.
We can also imagine a way to put ants in a long glass tube in a vacuum and then put them in a container. If the tube is long enough, there is a chance that the ant will fall to his death because there is no air resistance when the ant falls in such a tube.
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