The kinetic energy of 245 joules is according to the American standard of "78 joules lethal kinetic energy", that is to say, as long as the warhead has 78 joules kinetic energy, it is judged as a bullet that can be fatal. In other words, this flowerpot is equivalent to three bullets. No matter how small things are, as long as they are high enough, it is very dangerous to fall.
Article 87 of the Tort Liability Law stipulates that if an object thrown from a building or an object falling from a building causes damage to others, and it is difficult to determine the specific infringer, in addition to proving that he is not an infringer, the user of the building who may have caused the damage shall pay compensation. In other words, if the falling object can't find the perpetrator, the whole building may "sit together" to compensate!
Extended data
The danger of falling objects is related to the weight, falling speed and deceleration time of falling objects. First of all, although objects fall at the same speed, heavy things have more energy and cause more damage. Secondly, the higher the height, the faster the object will fall to the ground. Apples that fell from four floors were severely deformed when they landed, not to mention other harder and heavier objects.
Finally, the deceleration time of the object, that is, buffering, is also very important. The greater the buffer, the smaller the impact of the object on the human body. Firefighters prepared a life-saving air cushion to pick up the jumper just for buffering.