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Article: Ball Exit Speed Ratio (BESR).(baseball)
- Article from:
- The Baseball Research Journal
- Article date:
- January 1, 2003
- Author:
CopyrightCOPYRIGHT 2003 University of Nebraska Press. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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The NCAA requires that all nonwood bats be certified so as to limit their "liveliness." The certification process is accomplished by measuring the performance of a bat under controlled conditions and then assigning a number to it; this number is known as the BESR (Ball Exit Speed Ratio). To be certified, the BESR of the bat must fall at or below a predetermined value set by the NCAA. This paper discusses the concept of the BESR.
THE BALL-BAT COLLISION
Figure 1 shows a ball and a bat just before the collision and the ball just after the collision (the position of the ball after the collision has been moved downward for the sake of clarity). The speeds ...
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