Throw balls to catcher by using Go Direct Force and Acceleration Sensor. Pitch (X-Axis) device to select angle, pull (Force) hook to select throwing power and roll (Y-Axis) device a little to throw ball. The arrow will show you power level (1-5, color) and angle (0-90, position). The game consists of nine throws.
To refresh my physics knowledge I used Projectile motion article on Wikipedia.
