Add Leaderboard video-generation first-frame assets (batch 140/303)

.gitattributes

@@ -18415,3 +18415,50 @@ Leaderboard/Video[[:space:]]Generation/TriplePhysics/MovingHitsFixed_ImpactFract
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Leaderboard/Video Generation/DoublePhysics/MovingHitsFixed_WindGravityBalance__bg299__9TdUgb_trajectory/caption.txt

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+A red plastic sphere descends, colliding with a copper sidewalk and rebounding. Concurrently, an identical red plastic sphere hovers above a silver, reflective, bluish-gray fan. Rotating blades generate upward airflow, balancing the gravitational force on the suspended sphere. The first sphere accelerates upon collision, while the second maintains static equilibrium. Distinct motion states arise from resultant force conditions: unbalanced impact forces contrasted against aerodynamic and gravitational interactions maintaining stability.

Leaderboard/Video Generation/DoublePhysics/MovingHitsFixed_WindGravityBalance__bg299__9lgpwK_trajectory/caption.txt

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+An orange plastic ball descends from above, impacting a red pavement and rebounding. The second orange plastic ball remains positioned directly above a red, reflective gray, mossy gray, and green rough fan. Rotating fan blades generate upward airflow, continuously counteracting gravity to maintain the equilibrium of the second ball. The first ball undergoes acceleration driven by net force and collision, while the second ball maintains a fixed position under force balance. Distinct motion states are entirely determined by their respective resultant force conditions.

Leaderboard/Video Generation/DoublePhysics/MovingHitsFixed_WindGravityBalance__bg299__Em8dya_trajectory/caption.txt

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+A blue sphere descends from above, impacts a lower surface, and rebounds. Concurrently, a second blue sphere maintains stable suspension above a red-orange reflective plastic fan. Rotating blades generate an upward airflow that precisely counteracts gravitational force, sustaining the equilibrium of the upper sphere. The lower sphere undergoes accelerated rebound driven by a net force differential, whereas the upper sphere remains suspended due to the balance between aerodynamic lift and gravity. Such distinct physical behavior stems solely from different resultant force conditions acting upon each movable object within the scene.

Leaderboard/Video Generation/DoublePhysics/MovingHitsFixed_WindGravityBalance__bg299__KMExJL_trajectory/caption.txt

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+A red irregular object with complex geometry undergoes vertical descent, impacting a weathered gray sidewalk and rebounding upward. Simultaneously, an identical red plastic object hovers above a fan composed of green plastic and dark gray metal. Rotating blades induce an upward airflow to counteract gravity, establishing force equilibrium for the suspended body. As the initial object undergoes acceleration and collision dynamics, the hovering counterpart remains stable, characterized by aerodynamic lift equaling gravitational force. Divergent motion states result from these distinct force regimes.

Leaderboard/Video Generation/DoublePhysics/MovingHitsFixed_WindGravityBalance__bg299__YA9dxw_trajectory/caption.txt

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+A yellow sphere descends from above, impacting a paved surface and rebounding. Concurrently, a second yellow sphere hovers directly above a floor fan. Rotating blades generate a unidirectional upward airflow that counteracts the gravitational force acting upon the upper object. Aerodynamic lift balances the downward gravitational force, maintaining equilibrium. The disparity in these dynamic behaviors originates from distinct net external force conditions: the former experiences acceleration via net force leading to collision, while the latter is sustained by balanced forces. Both phenomena demonstrate how external forces govern the state of motion within a shared environment.

Leaderboard/Video Generation/DoublePhysics/MovingHitsFixed_WindGravityBalance__bg299__hPp0PD_trajectory/caption.txt

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+A green plastic sphere descends, impacts a lower surface, and rebounds upward subject to net force acceleration. Concurrently, a second green plastic sphere is suspended within upward airflow generated by an aluminum-grey and yellow-green fan, maintaining static equilibrium. Rotating blades induce airflow that continuously counteracts the downward gravitational force acting upon the sphere. While the first sphere undergoes collision and rebound dynamics driven by kinetic energy transfer, the second sphere remains stationary relative to the airflow. These states originate from respective net force conditions, demonstrating that balanced aerodynamic lift opposing gravity sustains suspension, whereas an unbalanced impact force drives the rebound trajectory.

Leaderboard/Video Generation/DoublePhysics/MovingHitsFixed_WindGravityBalance__bg299__vNt8P6_trajectory/caption.txt

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+Two orange plastic spheres comprise the scene. One sphere descends, impacting a dark, rough sidewalk and rebounding. The other sphere hovers above a silver, smooth, salmon-colored fan, where downward gravitational force is balanced by upward aerodynamic thrust generated by rotating blades. Continuous airflow counteracts gravity, maintaining the sphere in static equilibrium. The first sphere undergoes acceleration and collision driven by net force, while the second maintains its position through force balance. These distinct states of motion arise entirely from differences in the resultant force conditions acting on each object.

Leaderboard/Video Generation/DoublePhysics/MovingHitsFixed_WindGravityBalance__bg299__wnr25B_trajectory/caption.txt

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+Two orange plastic spheres exhibit divergent dynamical behaviors. One undergoes vertical descent, impacting a green sidewalk and rebounding immediately. The second orange plastic sphere remains stably suspended above a yellow low-density plastic red-white matte fan. The upward aerodynamic force generated by the fan counteracts gravity, maintaining the sphere in equilibrium. The descending sphere undergoes acceleration driven by net force and subsequent impact, whereas the suspended sphere maintains stability due to balanced forces. Their differing states depend upon the resultant force conditions governing respective interactions.

Leaderboard/Video Generation/DoublePhysics/MovingHitsFixed_WindGravityBalance__bg299__zsdxFS_trajectory/caption.txt

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+A gray perforated plastic sphere descends from above, impacting a salmon-colored pavement before rebounding into the air. Concurrently, a second identical gray perforated sphere hovers directly above a pale blue crinkled green-silver fan. The fan rotational mechanism generates upward airflow, counteracting the downward gravitational force acting on the upper sphere. The first sphere undergoes acceleration driven by net force and collision dynamics, while the second sphere maintains equilibrium, with aerodynamic lift precisely balancing gravity. These distinct motion states originate from the respective net external force conditions acting upon the identical perforated objects within the scene.