Abstract
Determining the speed of a ball as a function of its height after it is launched straight upward in the absence of fluid resistance is a standard problem treated at all levels of introductory physics. Inclusion of drag in the problem is seldom covered even in the introductory course for majors. But, in fact, this problem can be solved via a straightforward application of the work–energy theorem for either linear or quadratic drag, and instructively plotted on graphs of kinetic versus potential energy.
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