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Why does a football that is thrown for a longpass ...

Why does a football that is thrown for a longpass first point upward and then turn downward at about half way  through its flight? The spin should have a gyroscopic effect on the ball so why doesn't it remain spinning on the  same axis for the entire flight?


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1610 answers
506 helpful answers

The football is following a trajectory. The spin enables it to follow the trajectory like a shell from a cannon. When a shell is fired it begins and ends the trajectory always pointing forward.
Posted 2009-11-05T07:34:56Z
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