Doomsday: Humanity shrinks 100 times

Chapter 91 Flat Throw
"Sniper plan?" Everyone became curious when they heard the new term.

"Well, it's obviously impossible to wipe it out at close range in this situation. Judging from the attacking intent of the spider before, we'll probably be surrounded before we even get close. Plus, there's probably a lot of spider webs around there."

After Lu Yuning finished speaking, he thought about the scene of a group of spiders besieging him, and his body trembled.

"I think I understand what you mean. Are you talking about long-range sniping?" Zhang Xinyue asked.

Lu Yuning nodded: "Yeah"

Zhang Xinyue frowned, then spoke, "But with our current abilities, even if we could make a bow and arrow, the arrows we shoot wouldn't be very powerful, right? Besides, the spider nest is at least four or five meters away, and the vegetation nearby is quite dense. We don't know how to snipe it from a distance."

Everyone was also puzzled.

Lu Yuning shook his head: "I'm afraid it wasn't possible before, but with your ability, maybe we can give it a try. But not to make a bow and arrow, but a projectile device."

Zhang Xinyue opened her mouth and seemed to suddenly understand.

She looked up, then looked towards the spider's nest area, her eyes gradually brightening.

"I see. You want to make a catapult?"

Lu Yuning smiled and said, "That's right."

After they chatted for a long time, the others still seemed to understand.

"I know about the catapult, but the distance is too far. This spider's nest looks out of reach and is out of our sight. How can we shoot it there? Aiming is also a problem." Wu Xiao scratched his head, expressing confusion.

"Let me answer this. Although I don't know how to kill that mutant, it shouldn't be a problem if I want to eject it."

Zhang Xinyue habitually found a small branch and started drawing on the ground.

"Although this spider's nest appears to be several hundred meters across, it's actually only about four or five meters away. So distance isn't a problem. We can build something like a slingshot and project heavy objects into the spider's nest. However, building a slingshot on the ground isn't a good option. We need a greater initial potential energy to throw the heavy objects."

Zhang Xinyue continued, "So if conditions permit, we can put the device on a tree. In this way, we don't even need to project it, we just need to project it horizontally. If the speed is high enough, the object will move horizontally and eventually land in the spider's nest."

After Zhang Xinyue finished speaking, she used a twig to draw a horizontal parabola on the sketch on the ground, and finally drew an X at the location representing the spider's nest.

Wu Xiao's eyes lit up and he nodded: "I understand."

"What do you know? So how do you aim?" Zou Yunxin said.

"Well, this is a horizontal parabola curve. As long as you control the initial speed, you can control the landing point. You're a poor student." Wu Xiao bluntly labeled Zou Yunxin a poor student.

Zou Yunxin didn't care.

Zhang Xinyue explained, "Ignoring friction, the duration of a projectile's free fall is fixed. Therefore, the final landing point depends solely on the object's height and initial horizontal velocity. For example, an object thrown horizontally from 2 meters will land in approximately 0.64 seconds. Assuming the spider's nest is 4 meters away, the initial velocity must be 6 m/s. This is ideal, of course, as air resistance and other factors must also be considered, but the difference shouldn't be too significant. Of course, we can't measure the initial velocity, so we can only rely on experimental calculations, and ultimately, we may need to convert it into potential energy."

Zou Yunxin was obviously confused, but he was too lazy to think about it, and then he thought of another question.

"What happens after it's shot in? Is it powerful enough?"

"You have to ask Yu Ning about this. I don't know either." Zhang Xinyue shook her head and replied.

Seeing that everyone almost understood his intention, Lu Yuning said, "I'm afraid we'll have to ask the pavilion for help with the problem of the shell power."

"You mean Wen Gang? I remember his ability was to make objects lighter, and he could shoot heavy objects out and then recover them."

"No, no, not in this direction. Just like before, it's hard to generate much power by relying on the weight of the object itself. We need to use Yun's new blasting ability."

"I did think of that, but why did you ask the people over at the pavilion for help?"

Lu Yuning said, "We need to process the nails. We don't have much rust left. The bomb we make might not be powerful enough, and one might not work. So we need Xu Ting's help to process the nails. Another use for the nails is to use them as a projectile. If we want to throw the bomb four or five meters horizontally, we need a certain initial velocity, which will definitely require Yun Xin's ability to accomplish."

Everyone finally understood.

It seems that the water system has just been completed, and another big project is about to begin.

Lu Yuning thought for a moment and then said, "But ordinary bombs may not be able to kill the spider. We still need to consider how to upgrade it."

"Do you have any ideas?" Lu Yuning shook his head: "No, you can also think about it. If you have any ideas, we should experiment with them."

Everyone nodded.

This concludes the discussion on the Spider's Nest sniper plan for now.

According to Zhang Xinyue's detection, the spider was indeed a female spider that could give birth.

If the spiders in this area are not dealt with, they will become a disaster. The tree hole will basically not be spared. It is just a matter of time.

Over time, with so many spiders, predation will become a big problem and they will inevitably expand their range.

So we need to hurry up with this plan.

Although the final landing point of an object in horizontal motion can be calculated based on the initial velocity.

However, their bombs should not be very massive, and issues such as air resistance must also be considered.

Therefore, we need to develop the device as soon as possible and then conduct field verification to check the drag coefficient and other factors.

Moreover, the horizontal throwing distance can be calculated, but the accuracy in the horizontal direction can only be achieved through experiments.

Now that we have decided to start construction, we must first select the location of the catapult device.

Lu Yuning was in trouble again, even though he had already built an aerial platform to place the water tank.

But I'm not sure if that height is enough.

The landing position of a horizontally projectile object is related to the object's initial velocity and the drop height.

Since it is not clear how much potential energy they can generate, the construction location cannot be determined at present.

If it is too low, the bomb thrown out will definitely not have enough distance.

If it is made too high, the cost will also increase. It is impossible to make it 10 meters high. This is also a test for Zhang Xinyue's ability range.

In the end, Lu Yuning had no choice but to decide to get rid of the nails first.

So I have to go to the pavilion and call Xu Ting over. Anyway, she said before that I can contact her anytime if I have any questions.

The plan was set, and Lu Yuning had no choice but to wait until Xu Qi came tomorrow to talk to her about this matter.

Today we will improve the water system and start digging and building the planned facilities.

After the bathroom and toilet are completed, you also need to decorate the inside, such as adding some toiletries and so on.

The next thing to be dug and built is the kitchen that Zhang Qian has been dreaming of. There are a lot of issues involved in the kitchen. We also have to consider the problem of steam generated during cooking. If conditions permit, we have to build a ventilation duct or something like that. Lu Yuning has not yet decided where to put the kitchen.

Zhang Xinyue began to calculate the relationship between the initial velocity and height of the parabola. Although the drag coefficient cannot be determined yet, it is possible to see what initial velocity is required at each height. No matter how accurate the calculation is, it ultimately depends on experiments. The purpose of the calculation is only to save experimental costs.

This is also relatively simple. Zhang Xinyue wrote, drew, and started calculating on the ground.

As the sky darkened, another fulfilling day came to an end.

The next morning, Lu Yuning got up early, ready to tell Xu Qi about his idea, and then asked her to send Xu Ting over.

However, the embarrassing thing is that Xu Qi didn't come today.

Usually Xu Qi would come here in the morning to see if there were any needs here.

But I guess they were busy recently, so they didn't come over.

"Oh, what a mistake. If I had known that last time Xu Ting came, I would have asked her to help deal with all the metals." Lu Yuning waited for Xu Qi all morning but didn't see her, and became a little annoyed.

"Forget it, I'll go there myself." Lu Yuning muttered to himself.

(End of this chapter)