{
  "capability_id": "physics.kinematics.free_fall",
  "tool_id": "free-fall",
  "engine": "free-fall",
  "calculation_version": "1.0.1",
  "generated_at": "2026-11-10T05:18:42.011Z",
  "engine_build": "2026-09-21",
  "test_count": 3,
  "passed": 3,
  "failed": 0,
  "tests_summary": {
    "golden": {
      "passed": 1,
      "total": 1
    },
    "boundary": {
      "passed": 1,
      "total": 1
    },
    "property": {
      "passed": 1,
      "total": 1
    }
  },
  "engine_tested": true,
  "expert_reviewed": true,
  "internally_reviewed": false,
  "review_kind": "expert",
  "source_checked": true,
  "reviewed_by": "CalculatorX physics review",
  "reviewer_role": null,
  "last_reviewed": "2026-08-09",
  "expert_review": {
    "status": "approved",
    "reviewer": {
      "name": "CalculatorX physics review",
      "role": null
    },
    "reviewed_at": "2026-08-09",
    "scope": [
      "formula",
      "input semantics",
      "assumptions",
      "limitations",
      "sources",
      "tests"
    ],
    "kind": "expert"
  },
  "internal_review": {
    "status": "not_applicable",
    "reviewer": null
  },
  "page": "https://www.calculatorx.com/calc/physics/free-fall",
  "api": "https://www.calculatorx.com/api/v1/calc/free-fall",
  "schema_input": "https://www.calculatorx.com/schemas/physics.kinematics.free_fall.input.json",
  "schema_output": "https://www.calculatorx.com/schemas/physics.kinematics.free_fall.output.json",
  "assumptions": [],
  "limitations": [
    "No drag; constant g"
  ],
  "boundary_conditions": [
    "coded hard errors"
  ],
  "sources": [
    {
      "title": "Intro physics / NIST units",
      "section": "standard relations",
      "supports": "engine formulas",
      "kind": "reference"
    },
    {
      "title": "CGPM / standard gravity gₙ",
      "section": "gₙ = 9.80665 m/s²",
      "supports": "Free-fall kinematics under pinned g",
      "kind": "standard"
    }
  ],
  "methods": [],
  "fingerprint": "sha256:198a5b74c2710ccd058c67f1ad55cdc1931f85e28a70a61098fef3be75dc8b09",
  "tier": "expert_verified",
  "verification": {
    "tests": {
      "passed": 3,
      "total": 3,
      "golden": 1,
      "boundary": 1,
      "property": 1
    },
    "contract_checks": {
      "passed": 6,
      "total": 6
    }
  },
  "evidence_core_generated_at": "2026-09-21T15:54:02.547Z",
  "rendered_at": "2026-11-10T05:18:42.011Z",
  "release_integrity": {
    "status": "verified",
    "scope": "workspace",
    "production_attestation_required": true,
    "calculation_version": "1.0.1",
    "artifacts": {
      "engine": "1.0.1",
      "page": "1.0.1",
      "capability": "1.0.1",
      "evidence": "1.0.1",
      "input_schema": "1.0.1",
      "output_schema": "1.0.1",
      "mcp_contract": "1.0.1"
    },
    "digests": {
      "input_schema_sha256": "014356aa9fb32b0b8006decc1d5390e92b8f8f1f8817fd330639f28ce677d4ab",
      "output_schema_sha256": "e1fb87e6da93f687c67a2ed342edf1c49224ea674fc08a1abea3de83565a31c8",
      "evidence_sha256": "eaba65f119c85217ba24c030b3a54687c687c607fb756ac78566ddf455fc6c2c",
      "evidence_core_sha256": "eaba65f119c85217ba24c030b3a54687c687c607fb756ac78566ddf455fc6c2c",
      "capability_sha256": "59fe28d2d1da3dc545de3e7d65b35ae2731eaa420608e6d9bebc5abe76077156",
      "engine_sha256": "c6ebd8436f08b413e1ac6317b2d48550f2e6639a90dff254244e3aa562158b8d",
      "mcp_contract_sha256": "eb3e39ad4a95ed263415b4932f185d5edfe00a2403267b7c5ed5f718d1ff6da3"
    },
    "contract_checks": {
      "total": 6,
      "passed": 6,
      "failed": 0,
      "items": [
        {
          "id": "release-artifacts-aligned",
          "status": "pass",
          "detail": "1.0.1"
        },
        {
          "id": "schema-output-required-declared",
          "status": "pass"
        },
        {
          "id": "schema-valid-input-executes",
          "status": "pass"
        },
        {
          "id": "engine-success-output-validates-schema",
          "status": "pass"
        },
        {
          "id": "schema-rejects-incomplete-input",
          "status": "pass"
        },
        {
          "id": "rest-success-payload-validates-schema",
          "status": "pass"
        }
      ]
    },
    "report": "https://www.calculatorx.com/.well-known/calculatorx-release-integrity.json"
  },
  "tests": [],
  "disclosure": {
    "policy": "calculatorx-public-evidence-v1",
    "full_validation": "private",
    "representation": "summary"
  }
}