Add Leaderboard video-generation first-frame assets (batch 185/303)

.gitattributes

@@ -19982,3 +19982,67 @@ Leaderboard/Video[[:space:]]Generation/TriplePhysics/MovingHitsMoving_FrictionSt
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Leaderboard/Video Generation/TriplePhysics/MovingHitsMoving_FrictionStop_BalloonLift__bg250__kC4aof_trajectory/caption.txt

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+Two barbells slide toward one another along a wooden floor with velocities of equal magnitude and opposite direction. They undergo a head-on collision, resulting in momentum redistribution. A third barbell advances and collides with a fourth barbell vertically suspended beneath two silver tethered balloons. The impact imparts upward momentum to the suspended barbell, inducing a transient vertical displacement. This displacement is counteracted by buoyant force, restoring the system to equilibrium. Finally, all four barbells experience gradual deceleration due to kinetic friction with the floor surface, terminating motion entirely.

Leaderboard/Video Generation/TriplePhysics/MovingHitsMoving_MirrorFragmentReflect_MirrorReflect__bg270__5CJW6u_trajectory/caption.txt

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+A sedan advances and collides with an orange glossy object, causing elastic compression. The object undergoes minor rebound while maintaining contact with the front bumper. Momentum transfers to the object, resulting in coupled forward motion. Subsequently, the sedan impacts an elliptical mirror; due to brittleness and concentrated impact load, the mirror undergoes catastrophic fracture. Simultaneously, a second orange glossy object falls vertically from above onto the sedan roof, rolling along the hood during deceleration. Subsequently, the sedan reverses. Both objects detach from the body and land. The remaining mirror surface reflects the environment, maintaining optical fidelity.

Leaderboard/Video Generation/TriplePhysics/MovingHitsMoving_MirrorFragmentReflect_MirrorReflect__bg270__EJz9Ln_trajectory/caption.txt

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+A dark sedan advances and collides with a blue object, undergoing elastic compression. Momentum transfer occurs accompanied by minimal rebound, moving the vehicle and object forward in a coupled state. Together, they strike an elliptical mirror, which catastrophically fractures due to material brittleness under concentrated loading. Simultaneously, a second blue object falls vertically, landing on the roof and rolling along the hood as the sedan decelerates. Subsequently, the vehicle reverses direction. Both objects disengage from the chassis and settle onto the ground. An unbroken mirror segment remains intact, reflecting the scene via specular reflection.

Leaderboard/Video Generation/TriplePhysics/MovingHitsMoving_MirrorFragmentReflect_MirrorReflect__bg270__EOAzIw_trajectory/caption.txt

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+The gold vehicle advances and collides with a blue sphere, inducing elastic compression. The sphere exhibits slight rebound while maintaining contact with the front bumper. Momentum transfers to the sphere, forming coupled forward motion. Both bodies strike an elliptical mirror, undergoing catastrophic fragmentation due to inherent brittleness under concentrated impact stress. Simultaneously, a second blue sphere descends vertically onto the vehicle roof, rolling forward along the hood as the automobile decelerates. Subsequently, the vehicle moves in reverse. The two spheres separate and come to rest. Unfragmented portions of the mirror reflect the surrounding environment via specular reflection.

Leaderboard/Video Generation/TriplePhysics/MovingHitsMoving_MirrorFragmentReflect_MirrorReflect__bg270__NbPFM9_trajectory/caption.txt

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+The orange vehicle advances and collides with an orange plastic sphere, generating elastic compression. The sphere undergoes slight restitution while maintaining continuous contact with the front bumper. Momentum transfer facilitates coupled translational motion. Subsequently, the coupled bodies impact an elliptical mirror; the mirror structure undergoes catastrophic fracture attributable to brittle failure under concentrated impact loading. Concurrently, a second orange plastic sphere falls vertically onto the vehicle roof. Following deceleration to a complete halt, the sphere rolls forward along the engine hood. Subsequently, the vehicle executes a reverse trajectory. Both spheres detach from the chassis and descend to the ground plane. The remaining intact mirror section preserves optical fidelity of the surrounding environment through specular reflection.

Leaderboard/Video Generation/TriplePhysics/MovingHitsMoving_MirrorFragmentReflect_MirrorReflect__bg270__OlXdqR_trajectory/caption.txt

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+A gray sedan advances, colliding with a green smooth sphere, inducing elastic compression; the sphere exhibits minimal rebound and maintains contact with the front bumper. Momentum transfers from the vehicle to the sphere, forming coupled forward motion. The vehicle impacts an elliptical mirror on the ground, fracturing due to brittleness and concentrated impact loading. Concurrently, a second green smooth sphere descends vertically from the air onto the vehicle roof, rolling along the engine hood while decelerating with the chassis. The vehicle subsequently reverses direction. Both spheres disengage from the vehicle and fall to the ground. The residual intact portion of the mirror reflects the scene, preserving fidelity via specular reflection.

Leaderboard/Video Generation/TriplePhysics/MovingHitsMoving_MirrorFragmentReflect_MirrorReflect__bg270__RU7qQx_trajectory/caption.txt

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+An aluminum sedan advances and collides with a red plastic sphere, inducing elastic compression upon impact; the sphere exhibits minimal rebound while maintaining contact with the bumper. Momentum transfers from the vehicle to the sphere, resulting in coupled forward motion. Subsequently, both traverse past an elliptical mirror. Concurrently, a second red sphere descends vertically onto the vehicle roof, rolling forward along the hood during deceleration. Thereafter, the vehicle reverses. The sphere detaches from the vehicle. The mirror reflects the surrounding scene, maintaining optical fidelity through specular reflection.

Leaderboard/Video Generation/TriplePhysics/MovingHitsMoving_MirrorFragmentReflect_MirrorReflect__bg270__bQrGhU_trajectory/caption.txt

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+A silver smooth vehicle proceeds and undergoes collision with a yellow sphere, resulting in elastic compression at impact. The sphere exhibits negligible rebound while retaining contact with the vehicle's front bumper. Momentum is transferred from the vehicle to the sphere, producing coupled forward motion. Concurrently, a second yellow sphere falls vertically onto the vehicle roof, rolling forward along the hood as the vehicle decelerates. Subsequently, the vehicle's direction reverses. Both yellow spheres separate from the vehicle and come to rest. A mirror reflects the scene, maintaining optical fidelity through specular reflection.

Leaderboard/Video Generation/TriplePhysics/MovingHitsMoving_MirrorFragmentReflect_MirrorReflect__bg270__cJAH37_trajectory/caption.txt

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+A cream-colored vehicle advances and collides with a green plastic sphere, inducing elastic compression during impact. The sphere rebounds slightly while maintaining contact with the front bumper. Momentum transfers from the vehicle to the sphere, resulting in coupled forward motion. Concurrently, a second green plastic sphere falls vertically onto the roof, rolling forward along the hood as the vehicle decelerates. Subsequently, the vehicle alters its direction of motion. Both green plastic spheres detach and come to rest. An elliptical mirror reflects the surrounding scene through specular reflection.