The Wild Science Arcade description
The ancient children's toy, designed apparently to inspire children with physics. It is necessary to control the ball, considering four things - gravity, friction, the type of ball (i.e. the material from which it is made) and the force with which it will fly.
There are several levels, the goal of each of them - so the ball went right into the hole for the passage of the following (taking into account the above characteristics).
"Control panel" at the bottom of the screen, you'll need to throw to set all parameters then press the right button.
The verdict - you know who recommended.
Enjoy playing The Wild Science Arcade online, it can be played on your browser and is free.