Their execution must be learned after continuous practice over time. From the point of view of the modeling of human movement in relation to the learning of complex motor skills, martial arts are of interest because they are articulated around a system of movements that are predefined, or at least, bounded, and governed by the laws of Physics. Martial arts are not outside the application of these techniques. Technological advances enable the design of systems that interact more closely with humans in a multitude of previously unsuspected fields. As already explained, in order to analyze if watching these techniques had an impact on the understanding of the physics concepts behind, a pre-and post-test were defined. (u-turn) when knee walking, i.e., suwari waza tai Sabaki shikko ho, or irimi tenkan shikko ( Figure 8).
The concepts prepared were: 1) force equals mass times acceleration, which is shown with a chudan tsuki punch ( Figure 5), 2) tangential velocity equals angular velocity times the radius, which is shown with the shomen attack with the bokken, i,e., ichi no suburior first suburi (Figure 6), 3) torque equals force times the perpendicular distance of the line of action of force from the axis of rotation, which is shown with the kote gaeshi technique after the chudan tsuki attack (Figure 7), and 4) angular momentum equals moment of inertia times angular velocity and is conserved when no external forces are applied, which is shown while turning 180 formulas were included in the visual aids (see Figures 5 to 8) to facilitate the comprehension of the concepts in the debriefing.
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