Suppressing his sullen mood, he glanced at Fujiwara at Bina, and then, with a movement of his five fingers, the tennis ball spun and a faint air flow began to rotate around the ball. Pen & Fun & Pavilion www.biquge.info

"Liar, isn't it!! Actually standing still in the air and not falling," Marui's eyes widened, and the bubbles in his mouth forgot to blow, "How did she do it?" ”

Smack-

The spinning ball is hit by the racket, and when the net cable is elongated, it not only does not stop the spin, but is covered with a layer of acceleration. Suddenly, the tennis ball flashed out like an electric shock, leaving only a few pieces of light to splash on the racket.

Fujiwara narrowed her eyes slightly, this ball was her previous failure point, but this time, the failure will definitely not be repeated! So, quickly run to the front of the ball, move your shoulder, and raise your hand.

However, the ball disappeared little by little as it traveled, and eventually passed through the racket.

Looking at her movements and that cold expression, a wisp of banter flashed in Bina's eyes, "Hmph~ Fujiwara, do you think you can hit this ball back....."

Smack-

The sound of hitting the ball sounded, and Binet's pupils shrank suddenly.

I saw that the figure of Fujiwara, who was still in the midfield just now, gradually disappeared, and then suddenly appeared in the backcourt and intercepted the tennis ball that showed the figure.

"Hiss ~ Double Volley !!" Kentaro Aoi exclaimed, "In the blink of an eye, the acceleration teleported to the backfield and swung two more beats!" I can do this without participating in U-17 training! It was so amazing that I felt like I was starting to burn. ”

Fujiwara looked at the tennis ball that was holding the racket, a faint light flashed on the lens, this ball is too familiar, after all, the exchange match of the national hour has been played several times, so she knows the principle of this ball, it will gradually vaporize the moment it touches the opponent's racket, and it will appear in the backcourt after hitting the net, not disappearing, but passing through the racket after vaporization.

When she was in the fifth grade, she suffered a big loss in this area, but that was also in the past, and even if she was growing up, she would naturally not fall behind.

Smack-

With a slam swing, the ball shot out like a hunting leopard, blurring a pale yellow streamer.

Wow -

The sound of clothes flying sounded in vain, and Asahina, who had already arrived at the first half, jumped into the air, leaned slightly, clenched the racket in his hand, and swung it at the tennis ball.

With a snap, the tennis ball shot away at a high angle of 80 degrees.

"High angle ball!" The eyelids are slightly heavy, and the high-angle ball cannot be caught until it hits the ground, and the only way to catch the ball is to wait for it to bounce up before hitting it back. But.......

I glanced at the tennis ball that was spinning at a strange angle, and I picked it up without a trace, and at this angle of rotation, even if it bounced up, it would travel at a flat angle of 15 degrees, and if you wanted to hit it back, you had to lower your body.

However, in this way, Fujiwara's knees have to bear twice as much pressure as the opponent, and the physical strength consumed is twice as much as the opponent. So, in general, this kind of ball is a bottomless pit that consumes physical strength!

Suddenly, trace's eyes trembled, looking at the gradually changing tennis ball on the court, a faint look of incredulity appeared in his eyes. I saw that the tennis ball seemed to be led by something, and it quietly rose at an imperceptible speed, from 15 degrees to 17 degrees, and then, with a snap, it was beaten back by Fujiwara.

The hand that touched the tear mole suddenly stiffened, as if thinking of something, and then turned to look at Tezuka.

Tezuka was pursing his lips slightly at the moment, and his eyebrows and eyes condensed in a rare way, not angry, but surprised. Such an expression is really rare in a hundred years, although it is very novel, but the trace department has no time to take care of it.

The change in that goal was so subtle that he couldn't have seen it if he hadn't had good insight, but that little change was an indescribable shock, if he wasn't mistaken......

"Hmph~ Qingxue Women's Network," a faint smile snorted from the tip of his nose, and he raised his eyebrows, "It's really surprising, Uncle Ben can't wait to fight with you." ”

Smack-

The tennis ball flew from Asahina's court to the no-man's land on the opposite court, and Fujiwara stood on the edge of the bottom line, took six steps towards the no-man's land (left), raised his right hand, and hit it back with a snap.

Asahina frowned slightly, Fujiwara's walking speed seemed to be getting slower and slower, from the beginning of the run to the later trot, and then to the current flat walk.......

A not-so-good feeling gradually came to her mind, and her eyebrows gradually tightened. Clenched the racket and hit the ball, adding a strong spin to the ball.

The pendulum clock was walking, swaying from side to side, making a clattering sound.

Fujiwara tucked his eyelids lightly, took ten steps towards the backhand area (right), and swung his paddle.

Smack-

The ball is knocked back, easily, it looks like a gentle swing of the racket, and no matter how much spin the ball is, it will be knocked back. It was as if a fist had hit a soft cotton wound, and there was nowhere to do it.

It's incredible, isn't it?

But it really happened in reality, that guy......

Asahina gritted her teeth, and the guy was hitting her ball back with no effort at the moment. Every time he played before, even if that guy didn't have to go all out, he would at least use six layers of strength, but now, ...... It doesn't look like it's even two floors.

It was also because of Fujiwara's easy counterattack that the ball she hit looked soft and had no strength at all.

Squinting his eyes, a cold light swept towards Bina's eyes, this guy may be more difficult than before.

Smack-

Coupled with more violent spinning, the tennis ball bounced off her racket and flew towards the opposite court.

Fujiwara moved his feet and walked nine steps towards the no-man's land without slowness, holding the racket in his right hand, locking the trajectory of the ball, and then swinging the racket.

Smack-

"Fujiwara ......." Momojo blinked, his tone was a little puzzled and a little surprised, "She's ......"

"Pendulum Law." The pen in Qian's hand paused, looked at Fujiwara, who had taken eight steps towards the backhand area in the court, and continued to write, "A pendulum, one moment to the left, one moment to the right, back and forth. It always oscillates regularly around a central value within a certain range, so it is named pendulum theory. It is used to show various mechanical phenomena. The most basic pendulum consists of a rope or rod, and a hammer. The hammer is tied underneath the rope, and the other end of the rope is fixed. When the pendulum is pushed, the hammer moves back and forth. The pendulum can be used as a timer. The intersection angle of the lines of the perpendicular plane, including θ0 maximum, the mass of the hammer, and the angular acceleration.

Ignoring the influence of air resistance, elasticity and weight of the rope, that is, the highest hammer rate is when θ=0, the tension of the rope does not do work on the hammer, and the sum of kinetic energy and potential energy does not change in the whole process. Pendulum is divided into impact pendulum, inverted single pendulum, cone pendulum, compound pendulum and magnetic pendulum, the first three are detailed in the system, and the latter two are chaotic columns.

Fujiwara's current law of oscillation is the impact pendulum, and the hammer of the pendulum on the law will have a completely inelastic collision with the shell, that is, after the left and right collisions, the two will eventually merge into one, ignoring the influence of air resistance and the elasticity and weight of the rope, and the pendulum will do endless circular motion, but here, these standing are all there, that is, ......"

"That swing ......," Kawamura looked at Fujiwara, who had taken two steps towards no man's land, and his voice was slightly low, "It's going to stop." ”

Click――

The clock, at this moment, came to an abrupt halt, and the heavy pendulum stopped its movement. The yellow-green tennis ball flew diagonally.

Asahina's pupils twitched.

Hum -

Suddenly, a strong air flow swirled around the court, radiating from Fujiwara as the center, pulling the tennis ball that flew towards the opposite corner and slowly flew towards him.

"This is," Chigoku's eyes widened, "Tezuka Domain?!! ”