We performed experiments in which a soccer ball was launched from a machine while two cameras recorded portions of its trajectory. Drag coefficients were obtained from range measurements for no-spin trajectories, for which the drag coefficient does not vary appreciably during the ball’s flight. Lift coefficients were obtained from the trajectories immediately following the ball’s launch, in which Reynolds number and spin parameter do not vary much. We obtain two values of the lift coefficient for spin parameters that had not been obtained previously. Our codes for analyzing the trajectories are freely available to educators and students.
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PAPERS| November 01 2009
Trajectory analysis of a soccer ball
John Eric Goff;
John Eric Goff, Matt J. Carré; Trajectory analysis of a soccer ball. Am. J. Phys. 1 November 2009; 77 (11): 1020–1027. https://doi.org/10.1119/1.3197187
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