Add Leaderboard video-generation first-frame assets (batch 152/303)

.gitattributes

@@ -18767,3 +18767,69 @@ Leaderboard/Video[[:space:]]Generation/TriplePhysics/MovingHitsFixed_ImpactFract
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Leaderboard/Video Generation/TriplePhysics/MovingHitsFixed_ImpactFracture_MirrorReflect__bg307__heWVGV_trajectory/caption.txt

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+A purple sedan traverses a paved surface toward a wooden fence. Upon encountering a blue-gray vase, the vehicle maintains forward motion. The rear bumper contacts the vase, fracturing instantaneously under compressive load due to brittleness, with resultant fragments scattering radially. Subsequently, the vehicle front contacts both the dispersed fragments and the fence simultaneously. This interaction triggers a brief backward rebound consistent with the conservation of momentum, resulting in slight rearward displacement. This event is depicted without distortion.

Leaderboard/Video Generation/TriplePhysics/MovingHitsFixed_ImpactFracture_MirrorReflect__bg307__jxpcIY_trajectory/caption.txt

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+A red automobile travels along a paved surface toward a wooden fence. A gray, rough vase remains stationary on the ground between the two objects. The vehicle contacts the vase with its front bumper, resulting in instantaneous brittle fracture under compressive loading, with fragments scattering radially. Subsequent interaction between the automobile, dispersed fragments, and the fence induces a brief backward rebound consistent with the law of conservation of momentum, causing slight vehicle retraction. An elliptical mirror displays the reflective imagery of the entire sequence without optical distortion.

Leaderboard/Video Generation/TriplePhysics/MovingHitsFixed_ImpactFracture_MirrorReflect__bg307__mpNCHS_trajectory/caption.txt

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+A brown wooden cart traverses a paved pathway toward a wooden fence. Its front bumper contacts a light gray vase, inducing instantaneous fracture under compressive loading. Fragments disperse radially, consistent with material brittleness. The vehicle front simultaneously interacts with the dispersed fragments and the fence, generating a transient backward recoil consistent with the conservation of momentum. The vehicle undergoes minor rearward displacement. The fragments remain stationary proximal to the impact point.

Leaderboard/Video Generation/TriplePhysics/MovingHitsFixed_ImpactFracture_MirrorReflect__bg307__nii2Bz_trajectory/caption.txt

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+A stone car advances along a paved path, colliding with a dark, rough vase. Compressive loading induces instantaneous brittle fracture, resulting in radial fragment scattering. The car's front end collides with the fragments and a wooden fence, generating a brief backward rebound consistent with momentum conservation. An elliptical mirror reflects this process without distortion.

Leaderboard/Video Generation/TriplePhysics/MovingHitsFixed_ImpactFracture_MirrorReflect__bg307__pQKmY9_trajectory/caption.txt

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+A reflective vehicle advances along a paved surface toward a wooden fence. Situated between these objects, a mossy, soiled vase rests on the ground. The vehicle proceeds forward until its front bumper contacts the vase. Under compressive loading, the vase undergoes instantaneous brittle fracture; fragments disperse radially. The vehicle's front end interacts with the scattered debris and the fence, inducing a brief backward rebound consistent with momentum conservation, resulting in slight rearward displacement. Nearby, an oval mirror reflects the entire sequence without optical distortion.

Leaderboard/Video Generation/TriplePhysics/MovingHitsFixed_ImpactFracture_MirrorReflect__bg307__uHs003_trajectory/caption.txt

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+A cyan vehicle traverses a paved roadway toward a wooden fence. Concurrently, a weathered gray vase occupies the intervening spatial region. During forward progression, the front bumper contacts the vase; subjected to compressive loading, the vase undergoes instantaneous brittle fracture, with fragments dispersing radially. Subsequently, the vehicle’s front assembly engages both the scattered debris and the fence simultaneously, inducing a transient backward rebound consistent with the conservation of momentum, thereby causing a slight vehicular retraction. Nearby, an elliptical mirror reflects the complete kinematic sequence without optical aberration.

Leaderboard/Video Generation/TriplePhysics/MovingHitsFixed_MovingHitsMoving_FrictionStop__bg302__0kbkIX_trajectory/caption.txt

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+A crank equipped with blue wheels and a gray plastic arm rotates, driving a yellow low-density plastic sphere along a wooden surface. This sphere travels a distance exceeding that of a second steel sphere rolling upon an adjacent darker, high-friction surface. Following collision with a gray cabinet, the initial sphere ceases motion abruptly, imparting momentum to the structure. Simultaneously, a spotted apple undergoes vertical freefall under gravitational acceleration, impacting the rolling second steel sphere. An elastic collision results in a deflection of the sphere's trajectory.

Leaderboard/Video Generation/TriplePhysics/MovingHitsFixed_MovingHitsMoving_FrictionStop__bg302__Ikc8u5_trajectory/caption.txt

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+A crank with pink wheels and a silver arm drives an orange plastic ball forward. Its displacement surpasses that of a second steel ball rolling on a darker, high-friction plane. Upon collision with a rough, eroded structure, the first ball comes to an abrupt halt, transferring kinetic energy and momentum. Simultaneously, a rough-surfaced apple descends vertically under gravitational acceleration. As the second steel ball rolls, the apple collides with it, inducing a trajectory alteration through elastic collision.

Leaderboard/Video Generation/TriplePhysics/MovingHitsFixed_MovingHitsMoving_FrictionStop__bg302__NyI9Tr_trajectory/caption.txt

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+A crank equipped with matte wheels and a rough, mottled earthen-brown arm rotates, driving the first green glossy object. Its displacement exceeds that of the second green glossy object undergoing parallel motion. Upon colliding with a gray weathered cabinet, the first object comes to rest abruptly, transferring momentum. Concurrently, a beige speckled object descends vertically, impacting the second object during its rolling phase, thereby altering its trajectory through an elastic collision.