Add Leaderboard video-generation first-frame assets (batch 54/205)

.gitattributes

@@ -4667,3 +4667,92 @@ Leaderboard/Video[[:space:]]Generation/SinglePhysics/MovingHitsMoving__bg227__1g
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Leaderboard/Video Generation/SinglePhysics/MovingHitsMoving__bg227__Bn2Oov_trajectory/caption.txt

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+A truck and a sedan approach one another on a flat sandy surface. Upon impact, the sedan undergoes a rapid variation in velocity resulting from momentum transfer from the more massive truck. Its trajectory deflects sharply upward and forward, entering a projectile trajectory. The truck proceeds forward owing to its greater mass and initial momentum, exhibiting negligible deviation relative to its original path. Kinetic energy is redistributed during vehicle interaction. The sedan undergoes vertical acceleration, while the truck experiences minimal deceleration.

Leaderboard/Video Generation/SinglePhysics/MovingHitsMoving__bg227__C6nQLA_trajectory/caption.txt

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+The truck and automobile approach each other. At the instant of collision, momentum transfers from the truck, possessing greater mass, to the smaller automobile. This impulse induces a significant alteration in the automobile's velocity, causing its trajectory to deflect sharply upward and forward before entering a ballistic arc. Conversely, the truck retains its initial momentum and continues forward, exhibiting only a minimal deviation relative to the original path. The larger vehicle maintains its heading at the point of contact, while the automobile remains in an airborne state.

Leaderboard/Video Generation/SinglePhysics/MovingHitsMoving__bg227__DFipRL_trajectory/caption.txt

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+A truck and a sedan approach each other on flat sandy ground. During the collision, the sedan undergoes a drastic change in velocity due to momentum transfer from the truck's greater mass; its trajectory deflects rapidly upward and forward, entering a ballistic arc. Owing to its substantial mass and initial momentum, the truck proceeds along the original path with minimal deviation. The more massive vehicle dominates the interaction, maintaining its course while imparting a significant directional change to the less massive vehicle during its ascent.

Leaderboard/Video Generation/SinglePhysics/MovingHitsMoving__bg227__IItF4b_trajectory/caption.txt

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+The truck and car approach one another. Upon collision, momentum transfers from the more massive truck to the less massive car. The car undergoes an abrupt change in velocity, with its trajectory deflecting significantly upward and forward into a ballistic arc. Due to its greater mass and initial momentum, the truck continues along its original path with only slight deviation. The car moves away from the impact point following curved projectile motion, while the truck maintains linear motion. The disparity in mass ensures the heavier vehicle dominates the final trajectory.

Leaderboard/Video Generation/SinglePhysics/MovingHitsMoving__bg227__J0e1i4_trajectory/caption.txt

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+A truck and a car approach each other. At the instant of collision, subjected to momentum transfer from the more massive truck, the car undergoes drastic velocity alteration. Its trajectory deviates sharply upward and forward, entering a ballistic arc. The truck proceeds forward, exhibiting only minor deviation relative to its original path. The car travels along a parabolic trajectory in flight before descending. While collision forces significantly redirect the car, the truck retains its momentum vector with minimal perturbation. The heavier vehicle dominates the interaction, absorbing impact energy and maintaining momentum. The lighter vehicle is projected into the air, traversing a distinct path until gravity dominates its descent. Post-collision, the vehicles separate, maintaining independent trajectories consistent with their respective masses.

Leaderboard/Video Generation/SinglePhysics/MovingHitsMoving__bg227__R5jQmX_trajectory/caption.txt

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+A black sedan and a truck undergo a direct head-on collision. Owing to the sedan's comparatively lower mass, the dynamic impact causes the vehicle's front end to lift off the ground and subsequently return to the ground, altering its orientation. The truck, possessing significantly greater mass, comes to a complete rest immediately following the impact event.

Leaderboard/Video Generation/SinglePhysics/MovingHitsMoving__bg227__UmhKsb_trajectory/caption.txt

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+A truck and a car approach one another. At impact, momentum transfers from the high-mass truck to the smaller car. The car experiences an abrupt velocity change, its trajectory turning sharply upward and forward into a ballistic arc. Gravity subsequently governs its flight. Retaining significant momentum due to its large mass, the truck continues along its original path with negligible deviation. The collision illustrates that mass disparities affect post-collision motion; the heavy vehicle remains essentially unchanged, while the light vehicle is redirected. The two bodies interact exclusively via contact forces, and the total system momentum is conserved.

Leaderboard/Video Generation/SinglePhysics/MovingHitsMoving__bg227__gIw2K9_trajectory/caption.txt

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+A truck and a sedan approach each other on a flat sandy surface. At the instant of collision, momentum transfers from the more massive truck to the sedan, causing a rapid change in the sedan's velocity. Its trajectory deflects sharply upward and forward, projecting the vehicle into a ballistic arc. The truck continues along its original path, producing only negligible deviation due to its greater mass. The lighter vehicle follows a parabolic trajectory determined by the collision impulse, while the dominant mass maintains its momentum vector during the impact process.

Leaderboard/Video Generation/SinglePhysics/MovingHitsMoving__bg227__gkbhKz_trajectory/caption.txt

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+A heavy truck and a light car approach one another on a sandy surface. At the instant of contact, the collision results in significant momentum transfer. The car undergoes an abrupt velocity change; subjected to the force exerted by the heavy vehicle, its direction of motion is sharply corrected upward and forward. Subsequently, the car travels along a ballistic arc. Meanwhile, the truck maintains its original course with minimal perturbation, as its large mass enables it to retain initial momentum during the collision. The trajectory of the small vehicle undergoes drastic deflection relative to the stable progression of the heavy truck.