Cork Launching

In a recently completed lab, we launched corks with baking soda with vinnegar. The carbon dioxide produced by this foaming mixture has to escape so it pushes the cork out of the test tube. At first, my group and me were using too much baking soda, which didn't launch the cap to the window, which was our objective. Then, we tried using more vinnegar with less baking soda. This made the cork fly a huge 690 centimeters. We tried this method over and over again (about 4 times) because the only thing wrong with our launching was our aim. Finally, we aimed it at the wright angle and the cork sailed through the room and straight to the room. My group and me were extatic.