Equipment: A tennis ball on a string. What it does: Swing the ball on the string to show circular motion. Release the ball to show the instantaneous velocity of the ball. Concepts Demonstrated: ...
It is easy to hit a student when releasing the ball. Practice this demonstration in advance. Hold onto the end of the string. Swing the ball in a vertical path. To show the instantaneous velocity of ...
Dr. Rod Cross, an avid tennis fan who earned his PhD in plasma physics from Sydney University, co-authored the book Technical Tennis: Racquets, Strings, Balls, Courts, Spin and Bounce with ...
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