1425 Bookworm Xu Que (1/2)
”What knowledge?” Buttface froze.
Everyone present looked blankly at Xu Que.
”Don't you know that speed can increase power? Based on precise calculations, we can accurately increase the power we need to an exact value so that we can break the ground but not affect the layer of ice on the lake,” Xu Que explained as he smiled at everyone.
Everyone was confused. They didn't understand what Xu Que was talking about, but it sounded like it could be very powerful.
”Wait for me for a moment.” Xu Que smiled as he stole a glance at the number of Acting Tough Points on the System interface. It still needed tens of thousands of points before it could meet the conditions for an upgrade.
”In fact, the principle is very simple. Assume that a stone falls from the top of a mountain with a small amount of force. As the distance it's falling increases, so too the power generated by the stone will gradually increase, and...”
”Oh!”
As Xu Que was explaining this principle, he suddenly pinched his fingers together and accumulated a stream of Celestial Core Power. Using his finger as a pen, he started to write confidently on the ground.
”According to the principle of momentum, if the rock rushes down from the high level as fast as possible, then at the moment of contact with the ground it will have the greatest force.
”In order to facilitate this calculation, let's ignore the impulse from the ground. The time taken for the force to take action is roughly 0.1 second. It can also be verified from calculations that the magnitude of the impulse is insignificant compared with the magnitude of the momentum. Therefore, the following formula can be written like this: Mv = (M+m）*v1,v1=(M/M+m)*v.
”Coming in contact with the ground could be either with a fist or foot. The friction is very small, hence it doesn't need to be included in the calculation. Let's set the force on the ground to F1. When I land with the fastest speed, I reach the maximum traction and balance with my own resistance. Thus, the traction can be kept constant as it is offset by the resistance. Then the above formula can be solved like this: 2F1 =（M+m）*a,F1=（M*M/4L（M+m））*V2.
”When landing, the speed is V2. From the momentum theorem, we can get (2f2-mg) * t2 = mv2.
”Then, the ideal way of stepping on the ground, with uniform deceleration and ignoring friction, can be represented by the formula: h =（v2/2）*t2.
”Through this formula, we can substitute the highest altitude I can fly to and the speed of my descent...”
.....
At that moment, Xu Que quickly wrote a bunch of dense formulas on the ground.
Everyone was looking at him blankly, dumbstruck. No one could understand these formulas. ”The magnitude of impulse? Conservation of momentum?” These were all words they'd never heard before.
Everyone, hearing that, although they still didn't understand what was going on, followed through with thunderous applause.
Xu Que suddenly stopped calculating and retracted his fingers. A smile could be seen at the corners of his mouth. ”I've finished. The final result is that the speed of 1,310.12 meters per second is enough to break the ground, without affecting the lake ice.”
HISS!
Suddenly, everyone in the audience took in a sharp breath of cold air.
”What's going on?”
”Is this for real?”
”Can he actually deduce such a precise number from these incomprehensible runes?”
DING! ”Congratulations to Host Xu Que for successfully Acting Tough. You've won 20,000 Acting Tough Points!”
DING! ”Congratulations to Host Xu Que for successfully Acting Tough. You've won 50,000 Acting Tough Points!”
”Ha, ha, ha!” Xu Que's eyes became very bright with happiness.
This wasn't all for nothing. Not only was the problem of entering the ground solved, but the Acting Tough Points had also been obtained. It was enough to upgrade the System version, and he even had excess Acting Tough Points to splurge with.
”System, quickly, upgrade now...”