{ "environment": { "air_resistance": "!=0", "gravity": 9.81 }, "ground": { "label": "Ground", "restitution": 0.5 }, "objects": [ { "height": 1.2, "id": 1, "initial_velocity_u": 1.473171, "initial_velocity_v": 1.406954, "name": "LeftPingPongBall", "restitution": 0.71, "size": 0.04, "size_symbol": "d", "static": false }, { "height": 1.3, "id": 2, "initial_velocity_u": 1.652248, "initial_velocity_v": 1.099225, "name": "RightPingPongBall", "restitution": 0.71, "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": "projectile" }