Naruto's civilian cannon fodder starts with the three-body technique

Chapter 100 The Principle of Sword Slash

"How should I accumulate power?"

After refining the Wind Breathing Technique to saturation, Umino Sasuke continued to practice the ultimate technique of the Sword Slash in the Konoha Style: Willow.

The core idea of ​​the sword-drawing slash is to kill with one strike, using the instantaneous high-speed sword-drawing slash to inflict a fatal blow to the enemy.

The key to achieving an instantaneous high-speed slash is to accumulate power.

At this time, Umino Sasuke placed his right hand on the handle of the fish-cutting knife, closed his eyes and gathered strength, constantly recalling the violent slashing trick taught by Maruboshi Kosuke, looking for that mysterious feeling.

But it always feels a little off.

A clanging sound.

A cold light suddenly appeared.

Umino Sasuke drew out his fish-cutting knife, leaped forward, and easily cut down a giant tree in front of him.

"What's missing?"

Umino Sasuke shook his head, his doubts growing deeper and deeper. Although his swordsmanship seemed to be constantly improving, it was difficult to make a qualitative leap.

I still can't find the key to accumulating energy and exploding.

Maruboshi Kosuke's words were so mysterious, saying that one needs to constantly practice and gain insights in order to grasp that strand of energy and achieve a breakthrough.

But the problem is, this feeling of worrying about gains and losses is very frustrating and tests one's patience.

"Could it be that what I need to practice now is not swordsmanship, but the state of mind?"

Thinking of this, Umino Sasuke suddenly realized that this process of continuous slashing and sharpening was not honing the swordsmanship, but the state of mind.

Just like forging iron, he refined the impurities in his heart bit by bit, and refined this strike to be extremely pure.

Purity is power.

"call……"

Umino Sasuke breathed a sigh of relief and stopped thinking about it. He continued to practice the sword-drawing slash with a clear mind.

Then he sheathed the fish-cutting knife, slowly closed his eyes, slowly gathered his strength again, and looked for the feeling of explosion.

Not long after he had accumulated strength, he felt an itch on his feet and discovered that many ants had crawled onto his heels. It turned out that the huge tree had fallen and opened an ant nest, causing a large number of ants to crawl everywhere.

"Ants?"

When Umino Sasuke saw the ant on his foot, he suddenly had an epiphany and seemed to understand something. Then he was stunned and stood there in a daze.

The light in his empty eyes became brighter and brighter.

"Isn't the fastest attacking creature on Blue Planet the Nitobe termite?"

The memories of the previous life could not help but emerge in his mind one by one, becoming extremely clear. If the popular science books in the previous life were correct, the mandibles of the Nitobe termite had the fastest ejection speed, which could reach 132 meters per second, far exceeding the maximum speed of the high-speed rail of 106 meters per second.

This is not the most amazing thing. The most shocking thing is that the acceleration has reached an astonishing million levels.

I clearly remember from my high school physics textbook that the formula for calculating acceleration is: v = 2as.

Where v is velocity, a is acceleration, and s is displacement.

The mandibles of the Nitobe termite move a distance of 0.5 centimeters, or 0.005 meters, at a speed v of 132 m/s.

According to the acceleration formula: a = v/(2s)
=(132)/(2*0.005)
≈1742400 m/s.

One G is 9.8m/s, which is the acceleration due to gravity.

1742400 m/s is approximately 177755 G.

More than 17G, what does this mean?
Even if an adult weighs 100 jin, 1G is 100 jin; if it is accelerated to 2G of gravity, it is 200 jin.

Accelerating to 1700 Gs is equivalent to 17 million pounds. "I wonder if Might Guy's final kick can reach 100 million pounds?"

It doesn't even require 1700 million pounds. I feel like 100 million pounds is enough to blow up the void.

Of course, it is basically impossible for human flesh and blood to reach such a terrifying gravitational acceleration. Even if it can, the flesh and blood and bones may not be able to withstand it.

Even if they stand still, ordinary ninjas may not be able to withstand the full body weight of 10G, let alone the gravitational acceleration of 17G.

The reason why the mandible ejection of the Nitobe termite can achieve such terrifying acceleration is not only because the mandible material is tough, but also because the acceleration process involves the conversion of static friction and kinetic friction, as well as the principle of instantaneous release of mechanical energy.

He didn't know much about static friction and kinetic friction because he didn't have enough knowledge of science in his previous life, but he knew a lot about mechanical energy.

Mechanical energy, including kinetic energy and potential energy.

Kinetic energy is easy to understand. It is the energy of an object in motion, which is related to the mass and speed of the object.

Potential energy, especially elastic potential energy, refers to the energy stored in an object due to elastic deformation, and its size is closely related to the degree of deformation.

"We learned in physics class that kinetic energy and potential energy can be converted into each other."

Umino Sasuke was shocked and his eyes suddenly lit up.

The Nitobe termite's attack acceleration is so terrifying, it must be because it cleverly converts mechanical energy and uses its large mandibles to perform a squeezing and pop-up attack, thus achieving an acceleration of millions of kilometers.

"Bingo!"

Umino Sasuke snapped his fingers, and his thoughts suddenly became clearer.

If he hadn't read popular science, he wouldn't have known that the fastest movement of the human body is snapping fingers.

The speed of snapping fingers is 7 milliseconds, which is more than 20 times faster than blinking.

The reason why snapping fingers is so fast is because the thumb and middle finger accumulate force in advance, like a squeezed spring, accumulating a lot of potential energy, which then explodes in an instant, converting this potential energy into kinetic energy.

By the same token, when athletes start running, they will also accumulate strength in advance and accumulate some potential energy. Like a squeezed spring, they convert this potential energy into kinetic energy, thereby accelerating their start in a short period of time.

"So, the so-called accumulation of power is not about the sword, but about the person!"

Umino Sasuke woke up as if from a dream, and suddenly he understood.

If you want to increase the speed of sword drawing and slashing, it does not depend on the sword, but on the person, on the heels, on the spine, on the arms, and on the entire spring system of the body.

The so-called storing of power is not the power of the knife, but the potential energy of the human body.

When the potential energy is accumulated, the human body explodes instantly like a spring ready to go, and then converts the potential energy stored in the human body into kinetic energy, bursting out with unimaginable speed to slash.

"call……"

Umino Sasuke took a deep breath and finally realized something. He quickly closed his eyes, put his right hand on the fish-butchering knife, and began to accumulate strength.

At this moment, a large number of images kept flashing through his mind. He calmed his mind, and all distracting thoughts began to dissipate. His state of mind became extremely peaceful. He began to imagine his entire body as a human-shaped spring, constantly compressing and accumulating energy.

I saw Umino Sasuke squatting slightly, and his heels slightly raised, like a tiger ready to hunt at any time, calm yet ferocious.

Suddenly, the aura on his body gradually began to restrain, and even the cells in his body seemed to be concentrated.

Sudden--

There seemed to be a crisp snap of fingers in my ears.

Clang!
A flash of cold sword light flashed across the sky like a meteor.

The huge rock in front broke into two halves, and the cut surface was smooth and delicate.

Bright as a mirror.

(End of this chapter)