Except for the brief instants when the ball was in contact with the table, it was free falling. Whether it was on the way up, or on the way down, it was experiencing a downward acceleration of 9.81 m s-2. Since acceleration was constant, the ball’s displacement’s varies with time quadratically.
It is quite fun to see in slow motion how the golf ball comes to a complete rest at the peak of the bounce.
It is also interesting to note that the ball’s displacement is symmetrical about the peak. In fact, if the video is played in reverse, the motion of the ball between bounces would have looked exactly the same.
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