How lethal is the dog throwing that killed passers-by in Lanzhou?

How lethal is the dog throwing that killed passers-by in Lanzhou?

A set of data: throwing a 30-gram egg from the fourth floor will make people swollen; Throwing it from the eighth floor can break the scalp; Throwing it from 18 floor can smash a pedestrian's skull. Dropping from the 25th floor can kill people on the spot.

A small stone with a big thumb may hurt people's scalp if thrown on the fourth floor, but throwing it on the 25th floor may kill passers-by on the spot, because the power from top to bottom will become great. 18 and empty beer bottles falling in the air on the 25th floor will cause fatal injuries. Throwing a 4 cm nail on the 18 floor may insert the pedestrian's brain.

Generally speaking, yes, people fall from the sky. Due to the acceleration of gravity, people are in a state of weightlessness, adrenaline surges, and people become dull to all tactile nerves, whether they are head-down or foot-down. Although everyone's sensitivity is different, if it is fatal height, that moment should not exceed 1 second, and the brain should not be able to react.

Some people say that the internal organs are broken, so jumping should be a painful death. I disagree with two points. First of all, it is difficult for the external air pressure to reach several times the internal air pressure. That should require a very high building, and most people don't choose such a high building to jump. In addition, the security of that kind of building is generally strict with ordinary people. In addition, as mentioned above, when people are in a weightless state of gravity acceleration, their hearts will accelerate and adrenaline will surge. Even if the internal organs are broken, the pain will be delayed by the brain What's more, nerves are mainly distributed on the body surface, and there are few visceral nerves, so if there is a small problem in our internal organs, we generally don't feel it. When we feel it, it is mostly serious.

In any case, in the event of a high-altitude parabolic injury, the most pitiful thing is the victim who was hit. And each of us may be the next victim of high-altitude parabolic objects. To prevent high-altitude parabolic objects, we must improve our ideological awareness, regularly check the firmness of objects placed at high altitude, and prevent high-altitude parabolic objects from happening at the source.