Speed of a golf ball:
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Before I began the optimization process, I hit more than 100 balls on the range to get loose. At the launch monitor I started with my 7-degree Ping driver. The computer showed my ball speed was 150 miles per hour, my launch angle 14 degrees and my spin rate 4,400 revolutions per minute.
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http://findarticles.com/p/articles/m...4/ai_101967391
Faster than my driving. Tiger Woods gets up to 180 - 200.