When the speed of the tennis ball is measured in tennis matches, is it directly measured, or is it based on the time and distance between the ball hitting the two players'
![Model trajectories for a spinning tennis ball: III. The effect of a light wind on ground strokes | Request PDF Model trajectories for a spinning tennis ball: III. The effect of a light wind on ground strokes | Request PDF](https://www.researchgate.net/publication/345930718/figure/fig4/AS:1132466718941216@1647012514411/Model-trajectories-for-a-centre-line-ground-stroke-with-under-spin-oy0-400-rad_Q320.jpg)
Model trajectories for a spinning tennis ball: III. The effect of a light wind on ground strokes | Request PDF
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