Chapter 19 This is also the first time I have done this kind of question
Gao Shang meant what he said.
According to Gao Shang's estimation of the two, they both have the potential to be at least third in the province, and maybe even second or first.
Even better than many students in top classes.
At the beginning, Xu You was indeed a little behind.
But after entering the deep learning state, Gao Shang's teaching speed was completely within Xu You's acceptable range. Xu You even felt that Gao Shang could speak even faster.
Of course, if this is said directly, it is easy for people to misunderstand that you are speaking in a sarcastic way.
"I feel fine. I can keep up for now. If I have any questions, I will definitely ask you, teacher."
Xu You answered very politely, and Gao Shang couldn't help but nod.
There are indeed not many students who can keep up with my pace in the first class.
And Lu Zhiyao really couldn't keep up with Gao Shang's lecture pace.
Lu Zhiyao had long been accustomed to self-study and was not very adaptable to Gao Shang’s teaching methods.
But in front of Gao Shang, Lu Zhiyao didn't know how to say it directly, so she just nodded perfunctorily.
After a few days of classes, Gao Shang felt that everyone had adapted well, so he decided to give a question to examine everyone's learning results.
"This is a question that is difficult for the semi-finals. Since some students may have done it before, I made some changes. I will give you 40 minutes at most. If you can answer it correctly within 20 minutes, you will be considered excellent. Students who have finished answering can hand it in to me directly."
Hearing Gao Shang's words, the students couldn't help but panic.
"What's going on? I haven't even finished many of the preliminaries, and now I'm working on the semi-finals?"
"Yeah, I don't know if I can pass the preliminaries yet."
"I heard that none of the questions in the semi-finals were easy. It was not easy to answer any of them correctly."
Looking at his classmates' panicked expressions, Gao Shang chuckled in his heart.
"Aren't you all usually so awesome? You think high school physics questions are too easy, so I'm going to dampen your spirits this time."
Unlike the preliminary round, the theoretical part of the semi-final is entirely composed of large questions.
There are eight big questions and the total time is 3 hours.
All in all, each question only takes a little over 20 minutes.
Of course, Gao Shang does not ask for it. With everyone's current level, how many people can solve this problem within 20 minutes?
Anyone who can reach this level has a good chance of getting into the provincial team, let alone being number one in the province.
Amidst the wailing, Gao Shang projected the question onto the big screen.
Seeing the screen full of text, the students were stunned for a moment.
This title has too many words!
If I didn’t know, I would have thought it was an expository reading task in Chinese.
"A homogeneous solid cue ball with a mass of m and a radius of R is placed on a horizontal table. The coefficient of sliding friction between the cue ball and the horizontal table is μ. Adjust the cue stick to a horizontal position in the vertical plane passing through the center of the ball, and hit the upper half of the cue ball..."
The title alone has hundreds of words and contains more than ten physical quantities.
This leaves many students still confused about the questions after reading them once.
Of course, there are also a few students who have already understood the question and started the process of analyzing ideas.
This includes Hu Shucheng.
Hu Shucheng is a real physics student.
If others can sometimes get 100 points in physics, it is because they have the ability to get 100 points.
The fact that Hu Shucheng scored 100 points in physics only means that the full score is only 100 points.
"I should have done this problem before, but I just changed a few conditions and data slightly."
For Hu Shucheng, such semi-final-level questions are difficult enough to tackle.
To put it simply, this question is a model of billiard hitting.
It involves physical processes such as collision, rotation, rolling, etc.
But as long as you master the knowledge of rigid body mechanics, you can still make it.
While scratching his curly hair with his left hand, Hu Shucheng had already started writing lines of formulas with his right hand.
"Applying the momentum theorem of the center of mass motion of a rigid body to the process of hitting the ball, we have..."
"The impulse moment of the cue ball relative to its center of mass is..."
"According to the law of angular momentum, we have..."
Before he knew it, Hu Shucheng had written down more than a dozen formulas.
"Huh~ It's finally coming out!"
Seeing that only fifteen minutes had passed, he was only one step away from the final result of the second question.
Hu Shucheng knew that he could get full marks within twenty minutes.
At this time, most of the students in the classroom had just begun to get an idea of how to do the questions.
Being able to finish the first question is already considered fast.
Sure enough, in this National Middle School Physics Competition, I, Hu Shucheng, am still the hope of Shengcheng No. 4 Middle School.
Just as Hu Shucheng was about to calculate the final result and hand in his paper first.
However, Hu Shucheng saw out of the corner of his eye that a figure next to him had stood up.
"Um?"
Hu Shucheng looked closely and found that it was Xu You.
"This...isn't possible?"
According to what Xu You said before, he had only been learning physical competition for more than a week.
How could he be faster than me, a veteran with competition experience ?
Could it be that Xu You had done the original version of this question before?
That's impossible. With such a short time, I can't even get through many preliminary round questions, let alone the semi-final questions.
Hu Shucheng felt that even if Xu You really did it, it would most likely be wrong.
When Gao Shang saw Xu You was the first to come forward, he was also muttering to himself.
Among all the competition students I have taught, none of them are as fast as a student in an ordinary class who has just started competing?
Although Xu You was indeed very talented, it was a bit too incredible that he could finish the rematch test within fifteen minutes on his first try.
"Xuyou, are you done?"
"Well, teacher, please take a look. I don't know if it's correct."
This was also the first time Xu You had done this type of question, and he was not completely confident in his answer.
After taking the notebook from Xu You, Gao Shang took a quick look at it.
The process seems very cumbersome and there are several places where corrections have been made.
It can be seen that this is the first time I have done this kind of question.
Gao Shang subconsciously felt that what Xu You did was probably flawed, so he was not in a hurry to see the results and watched the process step by step from the beginning.
"Well... there are no problems with the first few steps..."
"That's indeed the correct calculation. The speed is correct..."
"It's a bit difficult to calculate the acceleration, and it takes a bit of a detour, but it can't be wrong to do it this way..."
Looking down step by step, the whole process, although a bit cumbersome, has no theoretical errors.
Gao Shang could clearly see that this was the question that would be solved by students who had just started the competition.
I didn’t use any problem-solving techniques, I figured out every step by myself.
However, relying on his strong problem-solving ability, he managed to figure out the answer.
Although the process is not worth promoting, it is entirely possible to get full marks.
What Gao Shang couldn't understand was that although Xu You's solution was complicated, he finished the problem very quickly and was the first one in the class to finish it.
