After writing the article ""Disappearing Question" or "Disappearing Card"?", someone left a message in the comment area, saying that I secretly changed the concept, and the disappearing question world does not refer to the question worldM5, but refers to the model at the same price as Xiaomi SU7, I thought about it, it may be talking about the question worldM5, but how to calculate it without a case?
This is really, what do you want to come, the original video of the "Disappearing Question World" M5 crashing into a large truck is here.
1. Theoretical model
The mass of the M5 is about 2350kg, but the mass of the large truck in the video is uncertain, so the formula for calculating the impact force needs to be adjusted.
Fortunately, as can be seen from the impact video, the M5 stopped after impact, which shows that the velocity of the M5 after the impact is 0. Considering that some bloggers have calculated that the velocity of M5 before the impact is about 72 km/h, that is, 20 m/s, in this way, the ∆V involved in the law of conservation of impulse can be calculated, that is, 20 m/s.
Recall that the formula of the law of conservation of impulse is: F·∆T=M·∆V, where F is the magnitude of the impact, ∆T is the time of impact, M is the mass of the object, and ∆V is the amount of change in velocity.
Second, the calculation process
Assuming that the collision time ∆T is 0.1 seconds, and then, substituting the ∆ T = 0.1 seconds, the mass of M5 M=2350kg, and ∆V=20 m/s into the formula, we can find that the average force at the moment of collision is 470,000 Newtons, which is equivalent to the sum of the tensile forces of 100 ordinary domestic cattle.
The size of this impact is about 1.5 times that of the Xiaomi SU7 hitting the small pickup.
After the impact, the front of the M5 has almost completely festered, the front windshield has not been broken, the A-pillar has not been seriously deformed, the front door can be opened by itself, the owner can still take things from the driver's seat normally, and the battery has not caught fire.
3. Summary
Yu Chengdong once said: "Safety is the greatest luxury". To be honest, if you spell the "safety" attribute, friends basically can't fight the world, after all, "safety" is the home of the world.
In the future, friends and businessmen still have to use their brains from other aspects, don't be fooled by big mouths - don't ask what the world is doing, you will also do it, so that you will fall into the inferior position strategically.
Fourth, next week's trend forecast
, or withdraw the share price of Cialis. On Thursday, Cialis fell 3%, and the stock price closed at 91.78 yuan / share, many people privately messaged me, what if Cialis's stock price broke the lower limit of the range I gave on Friday? I said, probably not.
After the official opening of the market at 9:30 on Friday, the share price of Cialis first fell to around 89 yuan / share, and then pulled up and returned to the positive, shocked higher, and closed in Hong Kong stocks Xiaopeng, ideal and other new forces have fallen by about 7.4%, up 4% on the day, and the closing price was 95.48 yuan / share, which did not break the lower limit of the range I gave - perfect!
Next week, if nothing else, the stock price of Cialis should stand at 100 yuan / share and break above the previous high of 106.66 yuan / share - in fact, the shorter the forecast time period, the greater the possibility of slapping the face - this prediction, I took a huge risk of slapping the face.
Considering the disclosure of the "2024 First Quarter Report" on April 30, there will be almost no uncertainty of "opening the blind box" from April 22nd to 26th, and the new Wenjie M5 will be released at the Beijing Auto Show that will open on April 25 - it should be considered good! The only external event that may have a negative impact is that the Nasdaq collapsed because Nvidia's performance did not meet expectations, but this may have a greater impact on the computing power sector, and the impact on Cialis is still small even if it is possible!