A Nice Introduction to Physics
This was a great idea. Unfortunately, the concepts you covered were rudimentary. The information regarding the speed of sound and breaking the sound barrier were actually incorrect at times. You should have explained that the speed of sound varies in respect to the medium in which it travels, the ratio of specific heats, and the temperature of the medium. That value for the speed of sound you gave (340 m/s) is only true at sea level on Earth. And regarding the sound barrier... it is simply the speed at which sound travels, there is no physical barrier. There is a lot more that needs clarification, but I only have so much room. Perhaps I'll make a flash tutorial on fluids and shockwaves.
If I were your physics teacher I would have probably given you a low B.