iMovie
acid like salt or such as baking soda could speed up oxidation speed. also acid rain also affects metal so salt would speed up the process
In Imovie HD, you can get the "squeaky voice" by going into audio fx, selecting pitch changer, and changing the slider around "chipmunk". However, if you have the Imovie '08/'09, the only thing you can do is speed up the video.
Visit the URL posted below (copy and paste it into your address bar). It is a video Tutorial about how to speed up video/audio in iMovie.http://video.about.com/desktopvideo/Apple-iMovie-editing.htm
I cannot say about "lenght", but distance is a measure of length so length affects distance. Speed is the rate of change of distance (over time) so length affects speed. Mass does not significantly affect speed or distance but, because they are affected by acceleration and acceleration is affected by mass (for a given force), then mass affects them. Also, mass affects space time and the presence or absence of mass changes the lines along which distances are measured and so distances and speed are affected.
The speed.
Depending on how the avi files are encoded, you can probably just drag them into the iMovie library. iMovie will then automatically convert them (this may take quite a while depending on the speed of your machine). Once the clips are imported you can use iMovie to create your production. When you are finished, you can use iDVD to burn your final product.
Speed affects the frequency and pressure affects the wavelength.
the brakes affect the speed
Visit the URL posted below for information on functions/features of iMovie (file is in PDF format):http://www.cctvcambridge.org/files/forms/5imovie.pdf
The acceleration changes if speed or direction changes
Yes. The velocity changes when the direction of motion changes, because the definition of 'velocity' is 'speed and the direction'. If either speed or direction changes, then we say the velocity has changed. Notice that if the direction changes, then the velocity changes even if the speed doesn't. "Velocity" is not just a bigger word that you use for 'speed' when you want to sound smart. They mean different things.