How many times do you need to bounce the white ball off the cushion to cleanly hit the coloured ball?
Activate the guiding line with the cue above the table. Play the ball, watch the guiding line and score!
When playing pool, people frequently use the fact, that the impact angle = ricochet angle. Professional players can determine the place on the edge of the table to ricochet the white ball in the required direction thanks to axial symmetry. The cushion acts as a symmetry axis. In digital pool, the computer calculates this for the player. An analogous model can be used, for example, to bounce a hockey puck from the wall or a ball in floorball.
