A sea of stars for top students

If you want to solve the problem of uniform deceleration linear motion with a final speed of zero...

Reverse thinking.

Okay, you've learned how to answer quickly, right? If I ask again... forget it, I won't ask you anymore.

After leaving Wu Bin in the office, Cai Guoping kept asking various physics questions for the first year of high school, but all of them were answered by the kid in front of him. Whether it was formula substitution or some error-prone questions, he answered them very well. decisive.

Hearing that Cai Guoping finally stopped asking questions, Wu Bin was relieved. In the past half hour, he felt as if he was participating in a program like One Stop to the End. He was extremely tired, but fortunately Cai Guoping didn't do it because of I couldn't defeat him by throwing some difficult questions, but kept asking around the basics.

How long have you been studying by yourself? Cai Guoping asked Wu Bin as he walked to the water dispenser to pour himself water.

Hmm...about a week.

At this moment, Wu Bin absolutely didn't dare to say that he only studied by himself for an afternoon, otherwise the teacher in front of him might jump.

Oh, I see you've been messing with math.

I will read it during evening self-study. I am still very interested in physics.

After hearing this, Cai Guoping finally showed a smile on his face, It's a good thing to be interested. As the saying goes, interest is the best teacher.

That's what Teacher Cai said.

Wait a minute, let me see if I have any papers for the first year of high school. Wu Bin naturally passed the test, so after Cai Guoping finished speaking, he sat back at his desk and rummaged through the cabinets. When he opened the second drawer , he asked while searching: Have you read the electrical part?

Not yet, I just read the book for the first year of high school. Wu Bin shook his head. Electricity was the focus of the second year of high school, and he had no idea about it yet.

Then you can watch it carefully. Electricity is more interesting than force.

Okay, I'll watch it tonight.

Now Wu Bin is completely confident in learning physics. He is confident that he can control thunder and lightning in just one night of self-study!

After a while, Cai Guoping pulled out two papers and said to Wu Bin: I really don't have any papers on pure mechanics. Just take this set and try it first. I will help you find it tomorrow.

Thank you, Teacher Cai.

Wu Bin took the test paper with both hands and couldn't wait to start working on it.

The multiple-choice questions at the beginning are relatively basic scoring questions, such as asking which of the following groups belong to the basic units of the International System of Units, the correct statement about curved motion, etc. The following questions that require calculations are not difficult. It can be solved easily.

These basic knowledge are completely engraved in Wu Bin's mind, and there is no reason for mistakes.

But the next big question made Wu Bin stuck.

Cai Guoping, who had been watching Wu Bin do the problem, saw him stunned and said, Which formula should be used when it comes to time issues and falling displacement issues?

Displacement time formula. Wu Bin answered firmly.

Then what are you still thinking about?

I'm thinking about how to answer the second question...

This sudden question about free fall instantly shattered the expansion that Wu Bin had just established. He originally thought that as long as he understood the formula thoroughly, he would not be afraid of any questions. The so-called exam questions were just the content in the book. It’s just seventeen or eight turns, they’re all paper tigers!

But now he knows that he was wrong. This corner is simply five hairpin turns in a row! It’s such a test of operation!

Hey! That's right, I don't know what to do. Seeing Wu Bin deflated, Cai Guoping smiled brightly.

‘Childish middle-aged man! ’

After silently complaining in his heart, Wu Bin asked flatteringly: Teacher, please teach me.

Listen, when you see a series of questions like this, it is best to use the whole process method. There is also a segmented method. I will teach you later.

After speaking, Cai Guoping began to patiently explain the problem-solving methods to Wu Bin.

So now you know the average speed in the last second, right?

20m per second?

By the way, isn't it very simple? Cai Guoping put down his pen and looked at Wu Bin.

After listening to what the teacher said, it seemed very simple. The teacher is awesome!

After solving this problem, Cai Guoping's image in Wu Bin's heart finally changed from a reluctant and naive middle-aged hairless old man to a physics master with a halo!

This kind of question is not worthy of the word awesome. The difficult part is still behind, so keep doing it. Although Cai Guoping said this, he was still a little proud between his brows, and he understood why Liu Yushan gradually became more and more famous. It didn't stop Wu Bin from praising him. This feeling of being admired by students was indeed a pleasant feeling.

Then, under the guidance of Cai Guoping, Wu Bin completed all the questions he could do in several sets of papers in the office, and some of them were still unfinished.

Okay, it's almost time. Get ready to go to the cafeteria. After teaching the last question, Cai Guoping looked at the clock on the wall and said.

Okay, thank you, Teacher Cai.

In fact, Wu Bin felt that he had not had enough yet, but he was too embarrassed to waste too much of the teacher's time, so he reluctantly said, Teacher, can you give me a few more papers?

Cai Guoping was stunned after hearing this, then laughed and said: Hahaha, okay, I'll pick two for you.

Wu Bin, who finally got the paper, bowed and left the office with a happy face. He was looking forward to having more fun in the evening self-study.

Teacher Liu, it's really interesting to teach this kid.

After Wu Bin left, Cai Guoping looked at Liu Yushan while sorting out the teaching materials.

It's quite interesting. Liu Yushan chuckled, I just can't figure out how a person who basically gave up studying in the first two years could become so motivated. It can be said that he is better than any student I have ever seen... Tsk, what should I say?

Eager to learn. Cai Guoping added.

Yes, that's how it feels. After all, the look in your eyes when doing the questions won't deceive.

Hahaha, the look in my eyes wouldn't be deceiving if I said he was asking for the paper. Cai Guoping laughed again when he thought of Wu Bin's expression when he asked for the paper just now.

Liu Yushan also laughed after hearing this: He reminded me of my little grandson's expression when he wanted to play more game consoles on weekends.

Yes, yes, that's how it feels. Cai Guoping strongly agreed, How can this person change so much? Tsk, tsk, maybe this is puberty.

Cai Guoping shook his head and sighed, then continued to organize the teaching materials.

After dinner in the cafeteria, Wu Bin immediately rushed back to the dormitory to find all the physics books for his sophomore and senior years. Although it was not so easy for him to solve the tortuous test questions, he finished these two books in one night of self-study. If you have absorbed the basic knowledge here, you should be fine.

The outcome was indeed not what Wu Bin expected. In just two self-study classes, he had finished reading the physics book for the second year of high school. But just when he was about to open the physics book for the third year of high school, he suddenly remembered that today's three hours of system tutoring had not yet finished. So I didn’t dare to waste it, so I immediately took out my math book and started studying.

Ah, life is so fulfilling.

Wu Bin, holding the math book in his hands, couldn't help but sigh.

nausea!

Gu Fan, the scumbag student next door, couldn't help but complain.