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OpenStudy (anonymous):
How would I measure the velocity of an arrow from a camera? A video camera records 30 "frames" or distinct images per second. (That's for an NTSC camera in the U.S. PAL cameras in other areas of the world take 25 frames per second.) You can use this fact to time events and measure velocity. One student has used a video camera to measure the velocity of an arrow shot from a bow.
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