Add Leaderboard video-generation first-frame assets (batch 102/205)

.gitattributes

@@ -8744,3 +8744,90 @@ Leaderboard/Video[[:space:]]Generation/TriplePhysics/WindPushStationary_WindDefl
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Leaderboard/Video Generation/DoublePhysics/BalloonTether_BlockWallCollapse__bg227__0aO4yQ_trajectory/caption.txt

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+A car accelerates toward a row of yellow and white boxes. The impact overcomes inertia and support, propelling them forward. One box, attached to a green glossy balloon, is displaced upward and rearward. Buoyant force exceeds gravitational force, inducing vertical ascent while the rope constrains motion relative to the box. As the box moves horizontally away, the rope tenses, connecting the balloon to the moving box via tension and gravitational forces.

Leaderboard/Video Generation/DoublePhysics/BalloonTether_BlockWallCollapse__bg227__FSJpe0_trajectory/caption.txt

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+A dark-colored sedan accelerates across a sandy surface toward a linear arrangement of wooden crates. Upon impact, the crates’ inertia is overcome, causing them to disperse; one crate—tethered by a taut rope to a green, glossy, spherical balloon—is propelled upward and rearward. The balloon, sufficiently buoyant to ascend against gravitational pull, rises vertically while the rope constrains its motion relative to the crate’s horizontal slide, stretching taut as the crate moves away. The remaining crates momentarily remain airborne before settling onto the sand under gravitational support, their initial static equilibrium disrupted by the collision-induced impulse.

Leaderboard/Video Generation/DoublePhysics/BalloonTether_BlockWallCollapse__bg227__GbRiLP_trajectory/caption.txt

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+A vehicle accelerates toward a row of wooden crates; collision transfers kinetic energy. The impact overcomes inertial resistance and static support forces, projecting the crates forward. One crate, affixed to a green-glossy balloon, is displaced upward and rearward. Buoyant force exceeding gravitational weight induces vertical ascent, while the tether constrains relative motion between the balloon and crate. As horizontal separation ensues, the tether becomes taut under gravitational tension. Gravitational acceleration acts downward, whereas aerodynamic lift sustains elevation within the constraints of the fixed-length tether. Momentum transfers from the vehicle to the crate, instantaneously altering the kinematic trajectory.

Leaderboard/Video Generation/DoublePhysics/BalloonTether_BlockWallCollapse__bg227__QoO4Sp_trajectory/caption.txt

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+An automobile accelerates toward a row of brown wooden crates. The impact force overcomes the crates' inertia and static support, projecting them forward. A crate tethered to a bright green balloon is projected upward and rearward. Buoyant force acting on the balloon exceeds gravitational force, causing vertical ascent, while the rope constrains its motion relative to the crate. As the crate recedes horizontally, the rope becomes taut. The balloon continues ascending, constrained by the rope, while the heavy crate undergoes sliding.

Leaderboard/Video Generation/DoublePhysics/BalloonTether_BlockWallCollapse__bg227__WqXIjN_trajectory/caption.txt

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+An automobile accelerates toward a row of wooden crates. Upon impact, forces overcome inertia and static support, projecting the crates forward. One crate attached to a green luminous balloon is displaced upward and rearward. Buoyant force exceeds the balloon's weight, driving vertical ascent. The rope constrains the balloon's motion relative to the crate, becoming taut as the crate moves horizontally away.

Leaderboard/Video Generation/DoublePhysics/BalloonTether_BlockWallCollapse__bg227__YDrpCZ_trajectory/caption.txt

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+An automobile accelerates toward several beige boxes. Upon impact, forces overcome inertia and normal force, projecting the boxes forward. A beige box tethered to a green glossy balloon is displaced rearward and upward. The balloon ascends vertically as buoyant force exceeds gravitational force, remaining constrained relative to the box via a rope. As the box translates horizontally away, the rope becomes taut. Although gravity acts downward on both bodies, the net vertical force on the balloon sustains upward motion. Tension limits the separation distance, while momentum drives the box's translation along the surface.

Leaderboard/Video Generation/DoublePhysics/BalloonTether_BlockWallCollapse__bg227__YhzxYF_trajectory/caption.txt

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+A dark-colored sedan accelerates across a sandy surface toward a linear arrangement of wooden crates. Upon impact, inertia is overcome, causing the crates to disperse; one crate—connected via a taut rope to a green, glossy, helium-filled balloon—is propelled upward and rearward. The balloon, sufficiently buoyant to ascend against gravitational pull, rises vertically while the rope constrains its motion relative to the crate’s horizontal slide, tensioning as the crate moves away. The remaining crates momentarily remain airborne before contacting the ground and settling, their mechanical support reestablished following the collision.

Leaderboard/Video Generation/DoublePhysics/BalloonTether_BlockWallCollapse__bg227__jSBCYg_trajectory/caption.txt

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+A black sedan accelerates across sandy terrain toward a linear arrangement of wooden crates. Upon impact, the crates—initially at rest—lose static equilibrium as inertia is overcome; they disperse outward. One crate, tethered by a taut rope to a green, glossy, spherical balloon, is propelled forward and upward. The balloon, sufficiently buoyant to ascend against gravitational pull, rises vertically while the rope constrains its motion relative to the crate’s horizontal slide, elongating under tension as the crate moves away. The remaining crates settle momentarily before coming to rest under gravitational support, their prior static configuration permanently disrupted by the collision impulse.

Leaderboard/Video Generation/DoublePhysics/ObliqueProjectile_RollDownSlope__bg252__615LHA_trajectory/caption.txt

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+A bright green, smooth, glossy conical object follows a parabolic trajectory under gravitational acceleration, descending from above and striking the inclined, ridged roof surface. Upon impact, its velocity vector resolves into components parallel and perpendicular to the slope; the parallel component initiates sliding motion down the incline. As it traverses the textured surface, gravitational potential energy converts continuously into kinetic energy, sustaining its downhill motion. The object’s low friction against the ridges allows steady descent, consistent with oblique projectile dynamics and conservation of mechanical energy.