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An example will help illustrate how these different physical principles are utilized in the execution of punching and kicking techniques.
For an offensive technique, the preparation phase will consist of a forward body motion (using neko ashi or fumikomi ashi ), which generates a linear momentum used in the execution phase described below.
Hineri zuki:Twist punch: Standing in hanmi, 'half-face front' posture (body diagonal to the front), left foot forward, and breath held in the tanden:
1—Rotate your hips and shoulders 45° to your right in a winding up motion. Your right fist will travel a longer distance and attain a greater velocity.
2—Abruptly stop the winding up motion and, using the spring of your rear leg and the reaction force of the ground, rapidly rotate your hips, shoulders, head, and right leg 90° to your left,. This generates a circular momentum in which the mass is the mass of the whole body and the velocity is the circular speed of the hips. The reaction force and the spring of the leg add a linear momentum to this motion.