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Apple QuickTime movie  |  1995-06-04  |  3.8 MB  |  512x276  |  30fps  |  42 seconds
Transcription: So far, we've been weighing and dropping things. Now, let's shoot some. The simplest projectile motion is to project something sideways, shooting a bullet horizontally or driving a car off a cliff. The key to understanding this motion is to realize that gravity acts only vertically. It affects only the downward part of the motion.