| {"correct_letter": "A", "correct_formula": "(1/2)\u00b7m_1\u00b7v_1i\u00b2 + (1/2)\u00b7m_2\u00b7v_2i\u00b2 = (1/2)\u00b7m_1\u00b7v_1f\u00b2 + (1/2)\u00b7m_2\u00b7v_2f\u00b2", "annotation": "Environment: g=-9.81, F_drag=0.0\nGround: mu_s=0.0, mu_k=0.0\nGlassCube: a = 2.0, e = 1.0, m = 20000.0, v_0 = 2.5\nStainlessSteelCube: a = 2.0, e = 1.0, m = 63200.0, v_0 = 0.0", "choices": ["(1/2)\u00b7m_1\u00b7v_1i\u00b2 + (1/2)\u00b7m_2\u00b7v_2i\u00b2 = (1/2)\u00b7m_1\u00b7v_1f\u00b2 + (1/2)\u00b7m_2\u00b7v_2f\u00b2", "B = \u03bc_0\u00b7I / (2\u03c0\u00b7r)", "\u0394E = \u03bc_k\u00b7m\u00b7g\u00b7d", "v_2f = 2\u00b7m_1\u00b7v_1i\u00b7cos\u03b8 / (m_1 + m_2)"], "correct_index": 0, "physics_type": "PerfectlyElasticCollision", "seed": "PerfectlyElasticCollision|benchmark/perfectly_elastic_collision/2"} |