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Is 89,500 feet per hour as fast as a Curveball (baseball)?

It's about one-fifth as fast as a Curveball (baseball)
The speed of a Curveball (baseball) is about 400,000 feet per hour.
(a.k.a. hook, a.k.a. hammer, a.k.a. yakker) (major league average)
The average speed of major league curveball pitch is 390,000 feet per hour. In the 1940's, debate over whether there really was a curve in the curveball pitch was settled with the conclusion that the ball does curve; however, an optical illusion caused by the spin of the ball and the batter's perception of motion exaggerates the extent of the curve.
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