Add realworld_subset/Composition/3

realworld_subset/Composition/3/annotation.txt

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+Environment: g=9.81, F_drag=!=0
+Ground: e=0.5
+Baseball: d = 0.07, e = 0.55, m = 0.14, h = 0.77, v_0 = 0.0
+SteelBall: d = 0.04, e = 0.6, m = 0.26, h = 0.77, v_0 = 0.63

realworld_subset/Composition/3/annotation_config.json

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+{
+  "environment": {
+    "air_resistance": "!=0",
+    "gravity": 9.81
+  },
+  "ground": {
+    "dynamic_friction": "TODO",
+    "label": "Ground",
+    "restitution": 0.5,
+    "static_friction": "TODO"
+  },
+  "objects": [
+    {
+      "height": 0.77,
+      "id": 1,
+      "initial_velocity_u": 0,
+      "initial_velocity_v": 0,
+      "mass": 0.145,
+      "name": "Baseball",
+      "restitution": 0.55,
+      "size": 0.07,
+      "size_symbol": "d",
+      "static": true
+    },
+    {
+      "height": 0.77,
+      "id": 2,
+      "initial_velocity_u": -0.627816,
+      "initial_velocity_v": 0,
+      "mass": 0.26,
+      "name": "SteelBall",
+      "restitution": 0.6,
+      "size": 0.04,
+      "size_symbol": "d",
+      "static": false
+    }
+  ],
+  "render": {
+    "axes_arrow_head_width": 20,
+    "axes_arrow_length": 75,
+    "axes_arrow_width": 8,
+    "fontsize": 20,
+    "margin_axes_range": [
+      5,
+      50
+    ],
+    "margin_env_range": [
+      5,
+      50
+    ],
+    "margin_ground_range": [
+      5,
+      50
+    ],
+    "velocity_arrow_head_width": 30,
+    "velocity_arrow_length": 100,
+    "velocity_arrow_width": 10
+  },
+  "task_type": "composition"
+}

realworld_subset/Composition/3/formula_info.json

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+{
+  "correct_letter": "B",
+  "correct_formula": "e = (v_2f - v_1f) / (v_1i - v_2i)",
+  "annotation": "Environment: g=9.81, F_drag=!=0\nGround: e=0.5\nBaseball: d = 0.07, e = 0.55, m = 0.14, h = 0.77, v_0 = 0.0\nSteelBall: d = 0.04, e = 0.6, m = 0.26, h = 0.77, v_0 = 0.63",
+  "choices": [
+    "T = 2π·√(m/k)",
+    "e = (v_2f - v_1f) / (v_1i - v_2i)",
+    "R = v_0²·sin(2θ) / (g·cos²θ)",
+    "σ = F/a² = E·ε"
+  ],
+  "correct_index": 1,
+  "physics_type": "Composition",
+  "composition_sources": [
+    "InelasticCollision",
+    "Projectile"
+  ],
+  "choice_sources": [
+    "InelasticCollision",
+    "InelasticCollision",
+    "Projectile",
+    "InelasticCollision"
+  ],
+  "seed": "Composition|Composition/3",
+  "is_realworld": true,
+  "dropped_wrong_formulas": [
+    "InelasticCollision: W_f = ∫ μ_k·m·g·ds = ΔE_k",
+    "Projectile: F_drag = (1/2)·C_d·ρ·A·v² (A = π·(d/2)²)"
+  ]
+}

realworld_subset/Composition/3/initial_state/initial_velocity.json

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+{
+  "video_path": "data/processed/Composition/3/rgb/video.mp4",
+  "fps": 30.0,
+  "scale_px": 56.0,
+  "scale_meters": 0.074,
+  "meters_per_pixel": 0.001321,
+  "velocities": {
+    "1": {
+      "u_ms": 0.0,
+      "v_ms": 0.0,
+      "speed_ms": 0.0,
+      "du_px": 0.0,
+      "dv_px": 0.0,
+      "static": true
+    },
+    "2": {
+      "u_ms": -0.627816,
+      "v_ms": 0.000993,
+      "speed_ms": 0.627817,
+      "du_px": -15.8368,
+      "dv_px": 0.025,
+      "static": false
+    }
+  }
+}

realworld_subset/Composition/3/initial_state/instance_segmentation_0000.npy

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+version https://git-lfs.github.com/spec/v1
+oid sha256:a0c50e248c3263c05374fdfbd9c37b7c6d0328fc9f085c0c53bc9a2a08ad0b23
+size 2048128

realworld_subset/Composition/3/initial_state/mask_0000.npy

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:49aba30aa6c402bb4a6071a4b2cde7c50e84a7bc6822cde3a8144c791784440c
+size 1024128

realworld_subset/Composition/3/instance_segmentation/maps.npz

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5c4aa7d6c08f609dde0a139165648ad52ec81dfa7506b498c6cddf018e39006c
+size 105029

realworld_subset/Composition/3/instantaneous_velocity/mask.npy

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:73d1a4426597bba8fb3b0a89da90a7885e36a8738168505bbd501643d411fac6
+size 1024128