Chapter 19 This is also my first time doing this kind of question

Gao Shang is sincere in his words.

According to Gao Shang's estimation of the two of them, they both have the potential to save at least three points, and maybe they can also make a second and first save.

Even better than many students in top classes.

Xu You was indeed a little unable to keep up at the beginning.

But after entering the state of deep learning, Gao Shang's lecture speed was completely within Xu You's acceptable range. Xu You even felt that Gao Shang could teach a little faster.

Of course, if you say this directly, it would be easy for people to misunderstand you as being sarcastic.

"I feel pretty good. 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 nodded.

There are really not many students who can keep up with their own pace in class for the first time.

And Lu Zhiyao really couldn't keep up with the pace of Gao Shang's lectures.

Lu Zhiyao has long been accustomed to self-study and is not very adaptable to the noble teaching method.

But in front of Gao Shang, Lu Zhiyao couldn't speak directly and just nodded perfunctorily.

After a few days of class, Gao Shang felt that everyone had almost adapted to it, so he decided to come up with a question to test everyone's learning effect.

"This is a difficult question for the semi-finals. Because some students may have done it, I made a few changes. I will give you a maximum of 40 minutes. If you answer it within 20 minutes and it is correct, you will be considered excellent. Students who have completed the answer will come up directly and hand it over.

I."

After hearing Gao Shang's words, the students couldn't help but panic.

"What are you doing? You haven't answered many questions in the preliminaries yet, so here are the questions in the semi-finals?"

"Yeah, I don't know yet whether I can pass the preliminaries."

"I heard that none of the questions in the semi-finals are easy, and it's not easy to get even one question right."

Seeing the panic of his classmates, Gao Shang snickered in his heart.

"Aren't you usually very good at it? If you think the high school physics questions are too easy, I'm going to kill your spirit this time."

Different from the preliminaries, the theoretical part of the semi-finals is all big questions.

Eight questions, a total of 3 hours.

After all, each question only lasts for a little over twenty minutes.

Of course, there is no need to be noble. With everyone's current level, how many people can solve this problem in twenty minutes.

Anyone who can reach this level has a good chance of entering the provincial team, let alone the first place in the province.

Amidst the wailing, Gao Shang projected the topic on the big screen.

Seeing the text that filled the screen, the students were a little stunned for a moment.

The word count for this question is a bit too much!

If you didn’t know better, you would have thought it was an expository reading of Chinese language.

"A homogeneous solid cue ball with mass m and radius R is placed statically on a horizontal table. The sliding friction factor between the cue ball and the horizontal table is μ. Adjust the cue stick to a vertical plane passing through the center of the ball.

Level, and hit the top half of the cue ball..."

Just the question itself has hundreds of words and contains more than ten physical quantities.

This makes many students still confused about the question after reading it once.

Of course, there are also a few students among them who have already understood the questions and started to enter the process of thinking analysis.

Among them, Hu Shucheng is included.

Hu Shucheng is a real physics student.

If others can sometimes score 100 points in physics, it is because they have the ability to score 100 points.

If you score 100 points on the Hu Shucheng physics test, it only means that the full score is only 100 points.

"I should have done this question before. I just changed a few conditions and data slightly."

For Hu Shucheng, this kind of semi-finals-level question is exciting enough.

This question, to put it bluntly, is a model of billiard hitting.

It involves physical processes such as collision, rotation, rolling, etc.

But as long as you have a good grasp of the knowledge of rigid body mechanics, you can still make it.

With his left hand scratching his curly hair, Hu Shucheng's right hand had already begun to write a line of formulas.

"For the batting process, applying the momentum theorem of the motion of the center of mass of a rigid body, we have..."

"The cue ball experiences an impulse moment relative to its center of mass..."

"According to the angular momentum theorem, there is..."

Unknowingly, Hu Shucheng had written down more than ten formulas.

"Phew~ It's finally coming out!"

Only fifteen minutes had passed, and I was already just short of the final result of the second question.

Hu Shucheng knew that he would definitely get full marks within twenty minutes.

At this time, most of the students in the classroom had just gotten an idea of ​​how to solve the problem.

Being able to finish the first question is considered fast.

Sure enough, in this year's National Physics Competition for Middle School Students, I, Hu Shucheng, am still the hope of Shengcheng No. 4 Middle School.

Just when Hu Shucheng was about to calculate the final results and hand in the paper first.

However, Hu Shucheng saw with his peripheral vision that a figure beside him had stood up.

"Um?"

Hu Shucheng took a closer look and found that it was Xu You.

"Isn't this...impossible?"

According to what Xu You said before, he has only just learned Wu Jing for more than a week.

How could it be possible to do it faster than myself, a veteran with competition experience?

Could it be that Xu You has done the original question of this question before?

It’s impossible. You can’t even get through the preliminaries in this little time, let alone the semi-finals.

Hu Shucheng felt that even if Xu You really did it, he would probably be wrong.

When Gao Shang saw Xu You coming forward first, he was also muttering in his heart.

Of all the competition students I have taught, none of them have done as fast as a regular class student who is new to competition?

Although Xu You's talent is indeed outstanding, it is a bit incredible that he was able to solve the semi-final questions within fifteen minutes for the first time.

"Xu You, are you done?"

"Well, teacher, please take a look. I don't know if it's right."

It was also the first time for Xu You to do this kind of question, and he was not fully confident in his answer.

After taking Xu You's notebook, Gao Shang took a quick look at it.

The process seems very cumbersome, and there are several corrections.

It can be seen that this is really the first time to do this kind of question.

Gao Shang subconsciously felt that there was probably something wrong with what Xu You did, so he didn't rush to see the results and watched the process step by step from the beginning.

"Well...the first few steps are no problem..."

"This calculation is indeed correct, the speed is correct..."

"It's a bit troublesome to calculate the acceleration. It's a bit of a detour, but it can't be wrong..."

Looking down step by step, the whole process, although a bit troublesome, has no theoretical errors.

Gao Shang could clearly see that this was the question created by students who were new to the competition.

No problem-solving skills were used, every step was figured out by myself.

However, with his strong problem-solving skills, he was able to calculate the results.

Although the process is not worth advocating, you can definitely get full marks.

What is even more incomprehensible to Gao Shang is that although Xu You's problem-solving method is very troublesome, he can solve the problem very quickly and he is the first to solve it in the class.
Chapter completed!