TV, newspapers, and the Internet were all occupied by Pei Qi for a while, and countless news reports were released, and everyone was shocked.

"Five members of the iPho national team were attacked abroad? Pei Qi participated in iPho and saved the national team members and many people? ”

"Thank goodness! All of them were unharmed! ”

"What happened during this time? What am I missing? ”

"Knock?"

"In the past, I stayed in front of the TV at 7 o'clock every night on time for the news broadcast, and insisted on watching it for 3 years, but I never saw myself and the people I knew once, so I finally realized: I am an ordinary person."

"Upstairs, don't make trouble, the National Competitive Elite Team was almost killed abroad, do you know how serious the situation is?"

"Don't talk about Pei Qi's character, just rely on Pei Qi to calmly escape with his teammates, this wave of my service!"

The news broadcast did not give Pei Qi much time, but various reports emerged one after another, and Pei Qi, who calmly saved people in the face of terrorist thugs, suddenly appeared on Weibo hot search, and the number of fans soared.

At this time, a girl who traveled abroad posted a video.

The voice in the video is very chaotic, many people are excited in tone, Chinese, English are mixed with various languages, the camera is shaking, it is Pei Qi's handsome face.

Netizens saw that this was a video after the incident.

The video was recorded by a girl.

"Thank goodness! I'm alive! Thank you for your calmness that saved us! I can't imagine your calmness! Boy, you were really handsome! ”

Pei Qi raised his eyes and tilted his head, "Mount Tai collapsed in front and the color remained unchanged, and the elk was on the left and did not look instantaneous, and then it could control the interests and treat the enemy." ”

The girl's eyes were full of adoring stars, "Oh my God, you are so handsome, especially when you explained the principle of bàozhà to everyone before, you were handsome!" ”

"zhàyàobàozhà is a chemical reaction process, but the chemical reactions of zhàyào are not all bàozhà, and the chemical reaction that must have certain conditions is bààyàobàozhà must have three conditions at the same time: exothermic reaction, generation of a large number of gases and high-speed reaction." The girl recalled Pei Qi's appearance when she said this, and her whole face turned red, "You are really amazing, calmness in this situation is not something that ordinary people can do." ”

Pei Qi shrugged, "I thought this was common sense. ”

The girl was even more excited, "Then when you're on the highway, how do you know that we won't collide with that car?" It's simply amazing! ”

Pei Qi raised his eyebrows and asked rhetorically, "How old are you?" ”

The girl immediately replied, "15 years old!" ”

"Then let me tell you about my calculations!" Pei Qi said with a smile, "We are 85 meters away from the car in front, we are located in the urban area, the speed limit is 36kmh, which is converted to 10ms, and we are speeding, the speed is 30ms, I have measured the distance of the car to brake and stop at different speeds when I was bored before, if I remember correctly, it is 180m."

0ms, the final speed is 0, the front speed.

It can be made by

When our speed is the same as the speed of the car in front.

From v'2-ax', we have traveled x'=160m.

v’=v-s。

Then the distance covered by the previous car is x"=v'0m.

Since x"+85x', that is, the distance we have traveled is less than the distance traveled by the previous car and the original distance, we can't hit it at this time, then we definitely can't hit it.

I believe this calculation is not difficult for any high school student, isn't it? ”