1.7. Spin and Flight Speed by Hitting
In the previous section, we have already seen how the spinning ball that hits the racket bounces back. Here, let's look at how the ball will bounce when you hit the static ball. Perhaps you will be able to systemize flying and spinning in the serve after reading this section.
The below figure shows the effect of flying and spin when you change the racket position and hit the ball at the same point of a static ball.
Hitting the ball from the racket position A , the ball flies on the action line of the A.
Hitting the ball from the racket position B, the ball starts to spin without moving.
Hitting the ball from the racket position C, the ball flies with spin on the action line of the C. Thus, from this figure, you will be able to understand that the Vx is in charge of flying and the Vy is in charge of spin.
Depending on the hitting angle for the ball, the effect will be as shown in the following figure.
As the boundary 45 °, the less than is "the swing consisting mainly flying", and the more than is "the swing consisting mainly spin".
Even if you swing with the same force,
it is possible to change the ratio of spin speed and flight speed by being aware of the location of hitting the racket angle and the ball.
Actually, there is an important meaning that you can change the characteristics of the ball flight by not only your force acceleration
but by your consciousness about the racket angle.