"When your strength comes to your waist and continues up along your spine, your arms can start preparing to shoot. This is 'two'."
"Um."
"Then you throw the ball. Imagine the arc of the ball's flight, and imagine the distance from your fingertips to the basket. A parabola is a resultant force that can be broken down into vertical upwards and horizontal forwards. Can you understand this?"
"Yes." Dexter nodded.
"The strength of your upper arm determines the height of the basketball, and your forearm determines its forward horizontal force. When you stand at different distances from the basket, your upper arm and forearm must cooperate to achieve the most perfect progress. ball arc."
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