On the CD-ROM, you will find a demo named Cannon Physics. Here's a brief description from the programmers, Michael Fawcett and Mike Wigand:
The Cannonball program is meant to look and feel a little like a Tank Wars or Scorched Earth clone, because we felt that many people would be familiar with the simple interface, and it lent itself to simple projectile physics nicely. The framework is kept to a minimum so that you can concentrate on the physics code rather than getting lost in files of collision code, Win32 code, image loaders, and so on.
Run the demo by double-clicking Cannon Physics.exe. You see a black background with two small cannons at the bottom of the screen and a bunch of information at the top of the screen. ...