Long jump
Hang

Following the pivotal takeoff phase, the jumper executes a deliberate maneuver wherein the free leg descends until it aligns directly beneath the hips. This strategic positioning, characterized by an elongated and streamlined body silhouette, is meticulously crafted to minimize rotational forces. By maximizing the distance between both the arm and leg extremities and the hips—the theoretical center of mass—the rotational inertia is significantly increased. Leveraging the principle that longer levers rotate at a slower pace than shorter ones, this configuration facilitates a controlled and stable aerial trajectory.

As the free leg descends to meet the takeoff leg, forming an angle of 180° relative to the ground, a symmetrical alignment is achieved with both knees positioned directly beneath the hips. This alignment marks the apex of stability during the airborne phase, as minimal rotational tendencies are manifested. This aerodynamically advantageous posture, colloquially termed the "180° position", epitomizes the pinnacle of equilibrium, affording the jumper enhanced control and poise amidst the dynamic forces encountered in flight.
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