This book contains graphs designed to show the trajectories of plastic baseballs ejected from a pitching machine, including hardball, softball, pop fly, and grounder patterns. Side views show the natural curvature of the path up and down on a day without wind. Forward views show the drift of the ball to the left or right during a windy day. These data can be used for lesson plans by teachers and parents.
ThriftBooks sells millions of used books at the lowest everyday prices. We personally assess every book's quality and offer rare, out-of-print treasures. We deliver the joy of reading in recyclable packaging with free standard shipping on US orders over $15. ThriftBooks.com. Read more. Spend less.