Add Leaderboard video-generation first-frame assets (batch 196/205)

.gitattributes

@@ -16713,3 +16713,90 @@ Leaderboard/Video[[:space:]]Generation/TriplePhysics/WindPushOppDir_VerticalFall
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Leaderboard/Video Generation/DoublePhysics/MovingHitsMoving_RollUpSlope__bg300__0BrEkw_trajectory/caption.txt

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+A red, glossy, smooth sphere perforated with numerous hollow cavities descends vertically under gravitational acceleration along a dark wooden incline. Concurrently, a green, mottled, glossy skateboard ascends the same ramp, its motion opposing the component of gravity parallel to the slope. At their point of intersection, the sphere collides with the upper surface of the skateboard. This impact instantaneously redistributes linear momentum: the sphere’s downward velocity vector interacts with the skateboard’s upward velocity vector, yielding modified post-collision trajectories for both objects, consistent with the conservation of linear momentum. A reddish-brown, grainy cube remains stationary in proximity, wholly uninvolved in the interaction.

Leaderboard/Video Generation/DoublePhysics/MovingHitsMoving_RollUpSlope__bg300__GI4qMt_trajectory/caption.txt

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+An orange plastic sphere with numerous hollow apertures descends vertically under gravitational acceleration. Concurrently, a red skateboard ascends, its direction of motion opposing the component of gravity parallel to its trajectory. At the intersection point, the sphere contacts the skateboard's upper surface. The subsequent collision instantaneously redistributes momentum: the sphere's downward velocity vector interacts with the skateboard's upward velocity vector, causing the trajectories of both objects to alter, consistent with the law of conservation of linear momentum.

Leaderboard/Video Generation/DoublePhysics/MovingHitsMoving_RollUpSlope__bg300__RANJ6k_trajectory/caption.txt

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+A green, smooth, glossy sphere—perforated with multiple hollow indentations—descends vertically under gravity along a golden, metallic, highly reflective ramp. A pale green, elongated object with longitudinal striations ascends the same incline, its motion opposing the component of gravitational acceleration parallel to the slope. At their point of intersection, the sphere collides with the upper surface of the ascending object. This impact instantaneously redistributes kinetic momentum: the sphere’s downward velocity couples with the object’s upward motion, resulting in altered trajectories for both, consistent with the conservation of linear momentum. The ramp’s mirror-like surface reflects ambient light during the interaction, accentuating the relative velocities and the abrupt directional change following the collision.

Leaderboard/Video Generation/DoublePhysics/MovingHitsMoving_RollUpSlope__bg300__ayeoE7_trajectory/caption.txt

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+A yellow, smooth, matte sphere perforated with numerous hollow cavities descends vertically under gravitational acceleration along a teal, woven, glossy inclined plane. A rough, brown, fibrous skateboard ascends the same incline, opposing the component of gravity parallel to the surface. At their point of intersection, the sphere impacts the upper surface of the skateboard. This collision instantaneously redistributes kinetic momentum: the sphere’s downward velocity couples with the skateboard’s upward motion, resulting in altered trajectories for both objects, consistent with conservation of linear momentum. The incline’s textured surface and the distinct material properties of the sphere and skateboard modulate friction and rebound behavior; nevertheless, the fundamental dynamics remain dictated by gravity, uphill motion, and elastic collision principles.

Leaderboard/Video Generation/DoublePhysics/MovingHitsMoving_RollUpSlope__bg300__b53uQZ_trajectory/caption.txt

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+A green, perforated ball descends vertically under gravitational acceleration. Simultaneously, a skateboard ascends along a textured incline, its motion opposing the component of gravity parallel to the slope. At their point of intersection, the ball makes contact with the upper surface of the skateboard. The ensuing collision instantaneously redistributes kinetic momentum: the ball’s downward velocity vector interacts with the skateboard’s upward velocity vector, resulting in altered trajectories for both objects, consistent with the conservation of linear momentum.

Leaderboard/Video Generation/DoublePhysics/MovingHitsStationary_RollUpSlope__bg300__BQPwqx_trajectory/caption.txt

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+A gray, rough ashtray slides forward and collides with a yellow sphere. After the collision, momentum transfers from the ashtray to the sphere, causing the two objects to form a coupled system moving together. This combined system moves toward an inclined plane and begins ascending along its surface. During this ascent, its velocity gradually decreases due to the gravitational component acting opposite to the direction of motion along the incline.

Leaderboard/Video Generation/DoublePhysics/MovingHitsStationary_RollUpSlope__bg300__CCUs8M_trajectory/caption.txt

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+A mossy, weathered beige ashtray slides forward across a golden, brushed-metallic kitchen tabletop and collides with a red, glossy, smooth sphere at rest. Upon impact, momentum is transferred to the sphere, causing the two objects to couple into a single composite system that rolls onward. This combined assembly then approaches an orange inclined plane and begins ascending its surface; its velocity progressively diminishes due to the gravitational component acting opposite to the direction of motion along the incline.

Leaderboard/Video Generation/DoublePhysics/MovingHitsStationary_RollUpSlope__bg300__ZGTwxm_trajectory/caption.txt

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+A grey ashtray made of brick slides forward across an orange kitchen tabletop before colliding with an orange plastic sphere. Upon collision, momentum transfers from the ashtray to the sphere, forming a coupled system that moves jointly. The combined system translates toward an orange inclined plane and subsequently ascends along its surface. During the ascent, the component of gravitational force directed down the incline opposes the direction of motion, resulting in a gradual reduction of the system's speed.

Leaderboard/Video Generation/DoublePhysics/MovingHitsStationary_RollUpSlope__bg300__nGqyh8_trajectory/caption.txt

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+An ashtray slides forward across the marble tabletop and collides with a stationary metallic ball. Upon impact, momentum is transferred from the ashtray to the ball, setting both objects into motion as a coupled system. The combined system then travels toward an orange inclined plane and begins ascending its surface; during this ascent, their speed diminishes progressively due to the component of gravitational force acting opposite to the direction of motion along the incline.