The impact speed of hail is affected by two aspects. The first is height. The higher the height, the greater the kinetic energy and the greater the speed of gravitational potential energy transformation. Generally speaking, when the temperature is low in winter, hail can crystallize at a relatively low height, and the speed at low altitude is low. After the spring, the temperature rises, and hail can crystallize at higher altitude, with low temperature and high altitude speed. In addition, the impact speed of hail is closely related to wind speed and direction. If hail flies with the wind, it will gain the speed bonus of wind speed, and the impact speed of hail will be faster. Hail flies against the wind, wind speed is resistance, and the impact speed of hail will be weakened.
The impact speed of hail is closely related to the loss caused by hail. And regardless of the speed of hail, it is harmful, so in order to prevent personal and property losses caused by hail, we should pay attention to the following three points:
1, the impact speed of hail is enough to hurt the body, so try not to go out in hail weather: first of all, don't go out in hail weather. If you encounter hail outdoors, don't hide under the tree, because hail is often accompanied by strong wind, which is easy to blow down the trunk and hurt people. The correct way is to find a shop nearby and take shelter from the wind for the time being. To avoid hail, some hail is the size of a fist, and once you win the prize, it is easy to be in danger.
2. The impact speed of the hail is enough to smash the car, so we need to find a sheltered place to stop for a while. We often see such news: after the hail, the owner's car is terrible, the roof is pitted and the windshield is broken. In order to avoid this situation, when it hails, find a covered place to park nearby. Stop even if the charge is unreasonable.
3, the impact speed of hail can sometimes smash the glass, so the principle of windows: the impact speed of hail is very large, especially the single-layer glass window glass in the old community, which is easy to be smashed, so in order to prevent being bruised, stay away from the window when it hails.