Yes, not bad!

Very standard answer, but this question is not very difficult!

continue!

An object that falls freely from a height to the ground, and passes through within one second in the middle is 30 meters, then what is the height of the object when it falls!

Fan Bowen doesn't give any options.

"Suppose the first period of free fall movement is t, then the later period is t, and the total time is t1t. According to h=?gt2, the difference between the displacement in (t1)s and the displacement in ts is equal to the displacement within one second in the middle,?g(t1)2-?gt2=30

Solution: t=2.5s

So the total time for an object to move is 6s!

That is to say, the height of the object falling h′=?gt2=?×10×62=180m!”

The answers are smooth and accurate!

"I'll go, this... isn't it right!"

"I...what the hell do I know!"

"It should be right, look at the teacher's expression!"

"I, Cao, is that terrible. I don't need to write, just calculate it directly? Can I also tell the process orally?"

"This is the same as following the answer!"

Fan Bowen was a little surprised. This question was already a bit difficult. Unexpectedly, Xu Qian even started talking!

no!

Come again!

When the object moves uniformly and decelerates in a straight line, stops at the end of 3s, then the ratio of the average speed within the first 1s, the first 2s, and the first 3s in these 3s?

“5:4:3!”

"Using reverse thinking, it can be regarded as a uniform acceleration movement with an initial speed of 0 from the end point to the starting point!"

"The last 1s of movement S, the last 2s of movement 4S, the last 3s (i.e., the first 3s) of movement 9S. Therefore, the first 1s of movement 9S-4S=5S, the first 2s of movement 9S-S=8S, the first 3s of movement 9S-S=8S, the first 3s of movement 9S

Average velocity = displacement/time

So the average speed ratio of the first 1s, first 2s, and first 3s is 5:4:3!"

Fan Bowen opened his mouth, and the surprise on his face gradually became rich!

And he seemed to be excited and started to talk about Balabara, one question after another.

“2m!”

“5S!”

“48m/s!”

...

Xu Qian easily told the answers one by one.

Fan Bowen's face became redder and redder. It was not shame, not shame, but excitement!

genius!

"Is there a genius in my class?"

The questions he used later were already physics competition questions, but Xu Qian didn't even feel the difficulty at all.

What is this?

Isn't this just a genius?

He looked at the notebook and said another question!

And this time, Xu Qian frowned.

"Teacher, you're beyond the syllabus. This is not a knowledge point in the first year of high school!"

Fan Bowen's expression stagnated, and then he burst into laughter.

"I thought you had mastered the physics knowledge of the second year of high school!"

"I have basically mastered it thoroughly in my first year of high school, and I will learn from my second year of high school next!"

Fan Bowen was speechless, but he didn't think Xu Qian was talking big this time.

Xu Qian's answers to so many questions just now were 100%. He had never mentioned some questions in it, which proved that Xu Que had thoroughly understood the physics of the first year of high school.

This is how you understand it thoroughly, others won’t be able to help you.

Although physics in the first year of high school is not difficult, it is definitely not easy for people who can learn physics by themselves!

"well!"

After saying a few good things in a row, Fan Bowen couldn't help but feel happy expression on his face.

“MMP, that’s so awesome!”

"I have written down a few of the questions that Teacher Fan said. If I do it myself, I can only do a few of them!"

"It's so difficult, no, why is Xu Qian so awesome!"

"This is what he is like in mathematics class. Is he really a top student?"

"Who knows, but if he knows it, why is his test scores so bad!"

One by one, they started to whisper, and some even secretly glanced backward from time to time.

Obviously, Xu Qian's outbreak made many people feel incredible absurd!

"Good, this Xu Qian..."

Li Yue let out a long sigh, but noticed that Yao Qingmei also secretly looked back, her rosy little mouth was slightly open.

"Hey, haven't you eaten together? What do you think of Xu Qian?"

"Ah?" Yao Qingmei was stunned and shook her head: "I...I don't know either!"

"have no idea?"

Li Yue curled her lips.

Not far away, Ren Yong also led Yao Qingmei to peek at Xu Qian's picture.

His face turned pale.

Especially when Xu Qian answered the question before, his expression was exactly the opposite of Fan Bowen!

Fan Bowen is getting happier and happier!

And he is getting ugly!

Especially Yao Qingmei secretly glanced at Xu Qian. Perhaps many classmates were secretly looking back at this time. After all, a transparent person suddenly shone brightly. Both men and women, they were basically curious and wanted to see if this guy had two brains.

But Ren Yong was wondering again whether Yao Qingmei had any other thoughts about Xu Qian!

"No, I have to teach this guy a lesson!"

Ren Yong gritted his teeth, and a ferocity flashed in his eyes!

Fan Bowen was giving a lecture on it and looked at Xu Qian from time to time.

At this time, Xu Qian was playing with QQ Home with his mobile phone.

[You answer questions seriously in physics class, high school physics knowledge points-1]

【You answer questions seriously in physics class, logical thinking-1】

...

【You play with your phone in physics class, vision +1】

【You play with your mobile phone in physics class, high school physics knowledge +1】

...

Tsk, it's so damn exciting, just like passing on skills, and fortunately he has a deep skill.

After the physics class, Fan Bowen went straight out of the classroom, but this time he did not walk towards his office.

When he walked to an office, Fan Bowen knocked on the door.

He pushed the door open and went in after a response came from inside.

It was a middle-aged man wearing glasses. He looked up and saw Fan Bowen with a smile on his face: "Teacher Fan, is there anything wrong?"

"Teacher Liu, I found a good seedling in my class!"

"oh?"

The surname Liu obviously showed some interest. It is rare to have a good seedling in physics.

Fan Bowen described what he saw in class, and the teacher named Liu listened very seriously.
To be continued...