Segmental speed (angular velocity) has traditionally been used to describe how the body's various parts—including the pelvis, ribcage, arm, hand, and club—produce and apply speed. Some have used this as a predictor or correlate for driving distance and ball movement.
The velocity of the object is represented by the slope of the line on this position-time graph. You can think of the velocity as a speed with a direction.
Therefore, The time period with the highest speed is also the one with the highest slope, either upward or downward.
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