The Science of Baseball
ebook ∣ Modeling Bat-Ball Collisions and the Flight of the Ball
By A. Terry Bahill
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This book describes the dynamic collisions between baseballs, softballs, and bats, and the intricate modeling of these interactions, using only Newton's basic principles and the conservation laws of physics. Veteran baseball science author Terry Bahill explains models for the speed and spin of balls and bats and equations for bat-ball collisions at a level accessible to high school and undergraduate physics students, engineering students, and, most importantly, students of the science of baseball. Unlike other, more technical accounts of these phenomena that exhibit similar rigor, the models presented in this volume use only basic physical principles to describe simple collision configurations. Elucidating the most important factors for understanding bat performance—bat weight, moment of inertia, the coefficient of restitution, and characteristics of humans swinging the bats, Dr. Bahill also explains physical aspects of the ideal bat and the sweet spot.
"Dr. Bahill's book is the perfect tool for teaching how to solve some of baseball's basic science problems. Using only simple Newtonian principles and the conservation laws, Dr. Bahill explains how to model bat-ball collisions. Also, he derives equations governing the flight of the ball, and proceeds to show what factors affect air density and how this density affects the ball's flight. And as a unique addition to his fine book, he provides advice for selecting the optimal bat—a surprising bonus!"
Dave Baldwin, PhD
Major League pitcher, 1966-1973, lifetime Major League ERA, 3.08
"If I were the General Manger of a baseball team, I would tell my people to write a ten-page paper describing what this book contains that could improve our performance. I think the book provides the foundation for change."
Bruce Gissing
Executive VP-Operations (retired)
Boeing Commercial Airplanes
"[I] had a chance to read your research, and I fully agree with your findings."
Baseball Legend Ted Williams, in a 1984 letter to the author
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