[mahmud]

That might require you to throw the ball in every possible combination, and capture a high resolution time series of its positions, in order to train the AI. Taking into account all the various parameters.

There will also be some heavy image processing, in your motion detection engine.

I recommend you start with a computer screen, and train your robot to follow the motion of a virtual ball on the screen. That way you can control every part of the experiment without a heavy investment in equipment (or all the pesky details of the real analog world.)