{
  "correct_letter": "B",
  "correct_formula": "x(t) = x_0 + v_0·t",
  "annotation": "Environment: g=-9.81, F_drag=0.0\nGround: mu_s=0.0, mu_k=0.0\nDenimCube: a = 2.0, v_0 = (2.0, 0.0, 0.0)\nRoughlyWovenCube: a = 2.0, v_0 = (1.0, 1.73, 0.0)\nFeltPlainCube: a = 2.0, v_0 = (-1.0, 1.73, 0.0)\nPiqueWeaveCube: a = 2.0, v_0 = (-2.0, 0.0, 0.0)",
  "choices": [
    "v = f·λ",
    "x(t) = x_0 + v_0·t",
    "x = v_0²·t / (2·x_0)",
    "F_push ≤ μ_s·m·g"
  ],
  "correct_index": 1,
  "physics_type": "UniformLinear",
  "seed": "UniformLinear|benchmark/uniform_linear/8"
}