The resulting force of the gesture depends on:
TO PLAY WITH MORE OR LESS POWERThere are several methods to play with more power:
To play with less power, just play with opposite parameters.
MATCHING FORCESFor a definite strength of the shot, depending upon the quantity of the played ball, the two balls will have different lengths of path.
It's possible to anticipate these paths.
See below: At a definite force of the gesture corresponds a length of the path of the played ball ( if it don't encounter any obstacle on its way )
The length of the paths of the cue ball and the played ball depends upon the aimed quantity.
It is possible to foresee the movement of the two balls.
TO HARMONIZE THE PATH OF THE BALLSWith the help of the table above we can see the ratio between the lengths of the two paths.
In consequence, we can choose the aim according to this ratio
Here is two examples where the path of the 2 balls is harmonized by a proper aim:
In this natural shot ( see below ) , we have the possibility to aim from 1/3 to 3/4 ball.
The played ball path seems to be twice longer than the cue ball path.
Therefore, we aim 2/3 ball.
It's a natural shot direction ( see below ), we have the possibility to aim from 1/3 to 3/4 ball.
The played ball path seems to be three longer than the cue ball path.
Therefore, we aim 3/4 ball.
PRACTICAL APPLICATIONIn practice, the ratio of the path is not always a whole number.
If we we need a ratio of 2,5 ( 10 CM the for the path of the cue ball and 25 CM for the path of played ball ), we must know look for the quantity to aim.
The final aim of quantity would be halfway between 2/3 ball (ratio = 2) and 3/4 ball (ratio = 3).