I cried countless students in the exam

Chapter 122 Physics Solution

Shen Ping doesn't really care about driving a Lamborghini, after all, although he has never eaten pork, he has seen pigs running.

Everyone hopes that one day they can drive a cowhide car and roam the streets, don't they?
So it was just driving, but Shen Ping still felt very happy when he drove a Lamborghini on the streets of Beijing for the first time.

Of course, this is not the most important thing, the most important thing is to enjoy the envious eyes of other drivers on the street.

so cool...

It's so satisfying that your whole body feels like flying.

But when Fan Danqiu said that it would cost tens of thousands of dollars to repair the car, Shen Ping was stunned.

What's the matter!
After getting out of the car, Shen Ping looked at the scratched area, and then coughed twice.

"Then what..." He glanced at the crowd of onlookers, then at the taxi driver with a nervous face, and said forcibly, "Let's determine the responsibility for this matter. Just now, when I was turning a corner, you suddenly ran away. Come out, this is your problem, so you are responsible, you can call the insurance company now."

When talking about calling the insurance company, Shen Ping's voice was deliberately aggravated, and at the same time, there was a full smile on his face.

But in the eyes of the people who eat melons, this is the Lamborghini owner bullying others!
The traffic police didn't even come, so you're going to blame someone else?
Your sister, you thought you were a traffic policeman!

But this matter had nothing to do with them, so they could only curse a few words, and then said that luxury cars should be taxed heavily to prevent them from harming ordinary people on the road.

The voice was angry, full of anger.

Immediately, Shen Ping was about to go back, but at this moment, people from the traffic police brigade came over and said directly, "Wait!"

As soon as the voice of "wait a minute" came out, all the melon-eating people around looked at the traffic policeman in unison.

With sweat on his face, the traffic policeman stepped forward and said, "The responsibility for the accident has not been determined yet, so don't leave yet!"

Shen Ping knew that the weather was rather stuffy today, so the traffic policeman's face was covered with sweat, it seemed that he came here from other places.

After hearing what the traffic policeman said, Shen Ping smiled and stood where he was.

On the contrary, he found this matter very interesting, and he cared that the presence of the traffic police could reveal the truth of the matter.

Even if the traffic police wanted to determine who was mainly responsible, he didn't say much, but said, "Comrade police, this accident is actually a trivial matter, it's not a big deal."

"Two cars turned a corner at the same time and there was a scratch accident. This happened on the road, so I should take care of it." The traffic policeman smiled.

At this moment, the people around were excited. At first, when they saw Shen Ping directly confirming the result of the accident, they did not dare to speak. This young man's attitude was very improper. He was not a good person at first glance. Look at that guy’s Lamborghini. Look, it’s pink. How can a man drive a pink Lamborghini?

"well said!"

"What Comrade Police said is great!"

"Those luxury cars should be heavily taxed, so as not to scratch them on the road in the future, and let ordinary people like us go bankrupt!"

"..."

People who eat melons complained one after another.

Shen Ping cleared his throat, looked around, and said, "Since I dare to say that he is responsible, I must have a basis."

The people who eat melons don't believe it at all.

"Evidence? Where did you get the evidence!"

"Absolutely impossible!"

"From the time the accident happened to now, I have been standing at the scene and never left!"

More and more melon-eaters can't stand it anymore and are joining the team to complain about Shen Ping.

Shen Ping is very angry, you don't believe that I have evidence?Just because I drive a Lamborghini, you think I'm too much?

Looking at all the melon-eating people in the audience, Shen Ping sneered, then cleared his throat, and directly began to analyze the reason why the other party was mainly responsible.

"The location of the car at the scene is where it stopped after the collision. Everyone can see clearly. In addition to the surveillance camera verification, we can also conduct physical calculations. How can we calculate who is mainly responsible through calculations?" Shen Ping began to explain .

However, the people who eat melons will definitely not buy it.

"This guy is going to start talking nonsense!"

"That's right, it must be to avoid responsibility!"

"Of course, I still pass the calculation? Who is mainly responsible for the calculation? This small scratching incident has something to do with physics! If he can come up with a correct result, my name will fall in the future." Write it!"

The melon-eating crowd booed and didn't believe it at all.

Everyone felt that Shen Ping was talking nonsense.

As a result, the next second, they were severely slapped in the face by Shen Ping!
"Now we make two assumptions: 1. The speed of the vehicle at the time of the collision is 30km/hour; 2. The speed of the vehicle at the time of the collision is 20km/hour." Shen Ping cleared his throat and directly analyzed on the spot:
"According to the reaction time of the taxi driver at that time, it was 0.2 seconds to 0.4 seconds, but I saw that the taxi driver was in his 60s, so his reaction time was chosen to be 0.3 seconds. From the moment he reacted, he moved his foot from the accelerator to the brake. The plate needs 0.15 seconds to brake free travel and 0.15 seconds. It takes 0.6 seconds from collision to effective braking. The sliding friction coefficient between the wheel and the asphalt road is 0.6... Friction force = positive pressure X friction coefficient = vehicle weight mgX0.6 (where m is The mass of the car, g is the neutral acceleration of 9.8 meters per second.) According to Newton's second law F=ma, a=F or M=0.6mg or m=0.6g=5.88, the distance from the collision to the stop is calculated as S..."

When Shen Ping told the reaction time, one of the spectators' eyes widened.

When Shen Ping uttered Newton's second law, the melon-eating crowd looked at Shen Ping, who was well-versed in analysis, in shock.

But when Shen Ping analyzed the next content, the people around him were all stunned!
What the hell!

Was it really analyzed by you using physics? !
"In the first collision situation, the vehicle speed at the time of collision is 30km per hour, v0=8.33 meters per second.

vT=vo-aT, vt=0, v0=aT, T=v0,

T=8.33 or 5.88=1.42 seconds.

S1=T1XV0=0.6X8.33=5米。

所以，S2=8.33X1.42-0.5X5.88X2.02
= 11.83-5.94
=5.89! "

However, Shen Ping did not pay attention to the looks of the onlookers around him, and analyzed eloquently: "Now let's talk about the second collision situation, that is, the vehicle speed at the time of collision is 20km per hour, then V0 = 5.5 meters per second.

VT=V0-AT, VT=0, V0=AT, T=V0
T=5.55 or 5.88=0.94 a second.

S1=T1 X V0=0.6X5.55=3.33一米。

S2=5.55X0.94-0.5X5.88X0.88
= 5.22-2.59
=2.63!

S=S1+S2=3.33+2.63=5.96！”

Following Shen Ping's continuous analysis, there was no sound other than the sound of vehicles driving around!

The onlookers were shocked!

In their minds, a small incident of scratching had nothing to do with physics problems, and it was impossible to solve them with physics knowledge, but Shen Ping was still answering!

"This this this..."

There are more and more answers!
The shock on the faces of the onlookers became more and more intense!

When the final answer came out, Shen Ping cleared his throat and said: According to the length of the car body is 4.875 meters, according to the position of the vehicle on the scene, even in the second case, my car traveled 5.63 meters from the collision to the stop, so it is within my I'm within my own lane line, so I don't have any responsibility, this taxi driver is fully responsible! "

　If you read this chapter, I am probably above Qinghai at this point?It’s really not easy to cross half of China. I looked at the time and arrived in Xianyang at 11:[-] pm.

　　
　
(End of this chapter)