Add Leaderboard video-generation first-frame assets (batch 220/303)

.gitattributes

@@ -21569,3 +21569,55 @@ Leaderboard/Video[[:space:]]Generation/TriplePhysics/ObliqueProjectile_RollDownS
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Leaderboard/Video Generation/TriplePhysics/ObliqueProjectile_RollDownSlope_RollUpSlope__bg261__b6ANWs_trajectory/caption.txt

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+A pale, potato-shaped object follows a parabolic trajectory toward an inclined plane. A dark gray-blue plastic sphere ascends the inclined plane for a distance, then reverses direction and descends under gravitational acceleration. During flight, the pale object contacts the inclined plane, maintaining horizontal and vertical velocity components. Its velocity vector redirects to align with the inclined plane, commencing synchronous descent along the incline with the dark gray-blue plastic sphere.

Leaderboard/Video Generation/TriplePhysics/ObliqueProjectile_RollDownSlope_RollUpSlope__bg261__g9tb8c_trajectory/caption.txt

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+A pale, potato-shaped object traverses a parabolic trajectory above an inclined plane. A blue plastic ball rolls upward along the incline for a distance, then reverses direction under gravitational acceleration and commences sliding downward. During flight, the object intersects and contacts the surface, retaining horizontal and vertical velocity components. Following impact, the motion vector redirects to align with the downward sliding direction, initiating parallel motion with the blue plastic ball along the incline.

Leaderboard/Video Generation/TriplePhysics/ObliqueProjectile_RollDownSlope_RollUpSlope__bg261__jIkjzN_trajectory/caption.txt

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+A white matte object traverses a parabolic trajectory above an inclined wooden board. A blue plastic object ascends a segment of the incline before reversing direction and sliding downward under gravitational acceleration. During flight, the white object contacts the board surface, maintaining horizontal and vertical velocity components. Following impact, the motion vector is redirected to align with the board's slope, initiating descent along the incline in synchronization with the blue object.

Leaderboard/Video Generation/TriplePhysics/ObliqueProjectile_RollDownSlope_RollUpSlope__bg261__mAZrY8_trajectory/caption.txt

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+A reddish-brown, potato-shaped object follows an arc through the air, descending toward a steep incline. An orange plastic disc ascends partially against gravity before reversing direction to descend. During flight, the object collides with the surface, retaining velocity components upon contact with the inclined plane. Its trajectory deflects to align with the slope, subsequently descending concurrently with the disc. Both bodies accelerate along the incline, governed by gravitational force and the conversion of potential energy into kinetic energy. The disc continues its descent, sliding parallel to the deflected object while moving along a shared path.

Leaderboard/Video Generation/TriplePhysics/ObliqueProjectile_RollDownSlope_RollUpSlope__bg261__uze5E5_trajectory/caption.txt

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+The orange plastic object rolls upward along the wooden board, subsequently reversing direction under gravitational acceleration to commence downward sliding. Concurrently, a rusted object traverses a parabolic trajectory through the air above. During flight, this object contacts the board while retaining its horizontal and vertical velocity components. Following impact, the motion vector redirects to align with the incline, initiating synchronized downward sliding along the slope with the orange plastic object. Gravity governs the airborne object’s curved path and the rolling motion on the ramp. Conservation of mechanical energy influences the reversal and subsequent variations in sliding velocity.

Leaderboard/Video Generation/TriplePhysics/ObliqueProjectile_RollDownSlope_RollUpSlope__bg261__xo8ijU_trajectory/caption.txt

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+The green potato traverses a parabolic trajectory in the air. The blue sphere rolls upward against gravity for a distance before reversing direction and descending. During flight, the potato intersects and contacts the common path, maintaining horizontal and vertical velocity components. Following the impact, the motion vector redirects to align with the descent angle, initiating downward motion synchronized with the blue sphere. Both objects maintain consistent velocity vectors, governed by gravity as they move along a common trajectory downward, with mechanical energy conserved during the interaction.

Leaderboard/Video Generation/TriplePhysics/RollDownSlope_SpringboardRebound_BalloonFloat__bg299__7IycoI_trajectory/caption.txt

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+A sand-colored irregular pipe slides downward under gravitational acceleration, maintaining contact until the edge. Following detachment, it collides with a horizontally positioned matte red spring-loaded plate. The impact induces downward elastic deflection of the plate, accompanied by localized lateral deformation near the contact point. Utilizing stored elastic potential energy, the plate rebounds upward, imparting a moderate vertical velocity component to the pipe. Concurrently, a blue plastic balloon located at the apex ascends steadily, propelled by a net upward buoyant force exceeding its weight.

Leaderboard/Video Generation/TriplePhysics/RollDownSlope_SpringboardRebound_BalloonFloat__bg299__FJaC2y_trajectory/caption.txt

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+A matte pebble object slides down an incline under gravitational acceleration, maintaining continuous contact with the surface until the edge. Upon departing the ramp, it impacts a horizontally positioned wooden diving board located on a sidewalk. The impact induces downward elastic deflection of the board, accompanied by localized lateral deformation near the contact interface. The board rebounds upward due to stored elastic potential energy, imparting a moderate vertical velocity component to the object. Concurrently, a blue balloon at the top of the incline ascends steadily, driven by a net upward buoyant force exceeding its weight.

Leaderboard/Video Generation/TriplePhysics/RollDownSlope_SpringboardRebound_BalloonFloat__bg299__HUPSCK_trajectory/caption.txt

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+The coconut shell accelerates under gravity, maintaining continuous contact until reaching the edge. Following detachment, it collides with a horizontally placed object. The impact induces downward elastic bending of the object, accompanied by local lateral deformation near the contact point. As the object rebounds upward due to stored elastic potential energy, it imparts a moderate vertical velocity component to the coconut shell. Simultaneously, the green plastic balloon positioned at the top rises steadily, driven by a net upward buoyant force exceeding its gravitational force.