What does it mean to get a perfect score on the college entrance exam but then go missing?

"tired?"

Qin Ze raised his head, his expression somewhat serious.

"Well, that's where I have to talk to you about."

"Learning without thinking is pleasurable; dying without learning is pleasurable."

"Metaphysics, if it doesn't work, drop out."

"My classes emphasize joyful education."

student:????

Is that correct?

Is that what they said?

Teacher, why don't you buy some genuine books to learn witty remarks?

Qin Ze continued speaking to himself.

"I advocate for open education."

"With me, there is no traditional teaching by words and deeds, only open-mindedness and development of your own talents."

"So, for this first lesson, I'm leaving you with some homework."

talking.

Qin Ze picked up the whiteboard marker and began to write scribbling on the whiteboard.

"When you have a cannon with a muzzle velocity of 1050 m/s, how can you increase its range to 10 kilometers?"

"You are free to use your imagination."

"In my classes, students are allowed to access the internet to research information and move around freely."

[At this point, I hope readers will remember our domain name: 20 ...

"As long as you figure out the problem, everything will be fine."

"Start thinking about it now. If you still can't figure it out by the end of get out of class, then you can leave get out of class automatically and continue thinking about it in the next class."

Done.

Qin Ze slung his backpack over his shoulder, quickly walked off the stage, and a smug smile appeared on his lips.

Attend class?

Ha! Even a dog wouldn't go there.

As long as the teaching allowance is in hand, anyone who teaches is a fool.

The students sitting inside were better at math than I was.

If it weren't for having Brother Tong at the bottom, he wouldn't even be as good as their toes.

So Qin Ze just gave a perfunctory answer.

The assignment he left was also impossible to complete.

"When you have a cannon with a muzzle velocity of 1050 m/s, you can only increase its range to 10 kilometers by dreaming."

These complex and counterintuitive questions will keep these freshmen thinking for three to five months.

These three to five months are enough for Qin Ze to earn a sufficient amount of course allowance.

As for those students...

Qin Ze felt that they were actually quite pitiful.

First, they were chosen by themselves to be free labor.

Later, the principal instructed him to participate in the military training performance.

Those were just a group of kids whose average age was less than fifteen; their small bodies couldn't handle it.

It would be better to let them rest during their own classes, as if it were free time.

Therefore, Qin Ze did not overemphasize classroom discipline, but simply let them follow instructions like shepherding sheep.

but!

His casual remark had a significant impact; the students all took it seriously.

……

For three consecutive days, the students devoted themselves to studying the problem left by the teacher, and the blackboard was covered with all sorts of calculation formulas.

Most of the arithmetic was done by hand by Zhang Huan and Li Liang, two mathematical geniuses.

"We need to simplify the energy model."

"Divide the effective work done by twice the amount of gunpowder by the mass of the projectile, and then take the square root of the result."

"This allows us to roughly estimate the kinetic energy of the gun barrel."

After listening to Zhang Huan's analysis, Li Liang painstakingly calculated it again.

"The mathematical model of a real ballistic trajectory is very complex. The gunpowder combustion rate, chamber pressure curve, barrel wear, and propellant temperature all affect the muzzle velocity."

Zhang Huan: "If it's in a vacuum, the formula for projectile motion is sufficient."

Li Liang: "But in reality, the returns will diminish at the margin, so we need a model, and we need to differentiate between high and low speed scenarios."

Speaking of which...

Zhang Huan looked at Xiao Xiao, a physics major: "Say something, we can only consider this from a physics perspective."

Xiao Xiao is the kind of person who is always quiet and reserved, and a super fan.

She only responds when someone explicitly asks her to.

then.

Xiao Xiao picked up the tortoise shell on her chest and shook it a couple of times, pretending to be serious.

Her eyes lit up when she saw the orientation of the coin inside the shell.

"Our direction has been disrupted."

"Since the question is about range, we should focus on the dosage."

"Any kind of mathematics, when applied to macromolecules, will increase the range."

"In other words, the energy released by gunpowder can offset other adverse conditions."

Zhang Huan was somewhat displeased: "Why do you seem so deliberately mysterious? The quality of the ammunition is fixed..."

He hadn't finished speaking.

Shen Ao, a DIY whiz, interrupted, "Not necessarily. We can work on the dosage density."

"What do you mean? Can't you invent gunpowder?" Li Liang retorted.

"It's not impossible."

Shen Ao took the whiteboard marker.

"I've been studying fireworks since I was a child, focusing on how to make them bigger and better."

"Before I entered the juvenile detention center, things were already somewhat in the works."

"First, we need a nozzle to compress the wake of the projectile."

"Secondly, we need a fuel that burns efficiently; liquid oxygen or methane would suffice."

"When the fuel is ignited, the exhaust flame is ejected into the atmosphere at supersonic speed. The air pressure is greater than the atmospheric pressure, so it expands directly."

"The pressure of the expanded airflow will be less than the atmospheric pressure, so it will be compressed by the atmosphere and then expand again."

"It goes from small to big, and then from big to small again."

"This is the most effective way I can think of to set off fireworks."

Zhang Huan went over the idea in his mind: "That seems to make sense. But since you already knew the method, why didn't you experiment with it?"

"I tried it!"

Shen Ao felt somewhat aggrieved.

"I went to buy these things, but the ones I bought were of poor quality and exploded."

Li Liang: "And then?"

Shen Ao: "Later I went to a juvenile detention center."

Upon hearing this, Xiao Xiao involuntarily picked up the tortoise shell again.

After a period of shaking.

She looked up, bewildered, and said, "What he said seems to make sense, should we give it a try?"

Everyone looked at each other.

Finally, Shen Ao made the decision: "We're students at the university now, so buying some rocket materials and controlled items shouldn't be a problem, right?"

Zhang Huan: "I think our project is a military project."

Li Liang: "Yes, anyway, it's for scientific research."

Shen Ao: "That makes things much easier. I'll make a list, and we can buy it online."

Zhang Huan: "Yeah, if we can solve this problem, we can finish the teacher's homework."

Li Liang: "The key is that you need to use a real-name account to buy things. Are you all adults?"

Everyone shook their heads.

Then his gaze fell on Xiao Xiao, the oldest among them.

Although Xiao Xiao is older, she is not old enough to have a real-name account.

So she picked up the tortoise shell again, shook it three times in the air, and coins randomly fell from it.

The other students found her annoyed by those two tricks.

Before anyone could complain, Xiao Xiao looked at the direction the coin was pointing and said...

"I can use my grandma's account to buy it!"