{
  "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 = (0.0, 2.0, 0.0)\nRoughlyWovenCube: a = 2.0, v_0 = (0.0, -2.0, 0.0)",
  "choices": [
    "P = ρ·g·h",
    "x(t) = x_0 + v_0·t",
    "F_D = (1/2)·C_d·ρ·a²·v²",
    "x(t) = x_0 + v_0·t + (v_0²/c²)·t²"
  ],
  "correct_index": 1,
  "physics_type": "UniformLinear",
  "seed": "UniformLinear|benchmark/uniform_linear/2"
}