kilometer per hour

{
  "id": "NISTu160",
  "unitsml_id": "u:kilometer_per_hour",
  "name": "kilometer per hour",
  "names": [
    {
      "value": "kilometer per hour",
      "lang": "en"
    }
  ],
  "symbols": {
    "unicode": "km/h",
    "ascii": "km/h",
    "html": "kh/h",
    "latex": "\\ensuremath{\\mathrm{kh/h}}",
    "id": "km/h",
    "mathml": "<mrow><mi mathvariant='normal'>kh</mi></mrow><mo>/</mo><mrow><mi mathvariant='normal'>h</mi></mrow>"
  },
  "identifiers": [
    {
      "type": "nist",
      "id": "NISTu160"
    },
    {
      "type": "unitsml",
      "id": "u:kilometer_per_hour"
    }
  ],
  "references": [
    {
      "type": "informative",
      "authority": "qudt",
      "uri": "http://qudt.org/vocab/unit/KiloM-PER-HR"
    }
  ],
  "short": "kilometer_per_hour",
  "root": false,
  "composite": true,
  "quantities": [
    {
      "id": "NISTq107",
      "name": "speed of propagation of waves",
      "type": "derived"
    },
    {
      "id": "NISTq12",
      "name": "velocity",
      "type": "derived"
    }
  ],
  "dimension": {
    "id": "NISTd11",
    "name": "velocity",
    "expression": "L·T-1",
    "components": [
      {
        "key": "length",
        "symbol": "L",
        "power": 1
      },
      {
        "key": "time",
        "symbol": "T",
        "power": -1
      }
    ],
    "dimensionless": false
  },
  "scale": {
    "id": "continuous_ratio",
    "name": "continuous ratio scale"
  },
  "systems": [
    {
      "id": "non-SI_acceptable",
      "name": "non-SI but acceptable",
      "short": "nonsi-acceptable",
      "acceptable": true
    }
  ],
  "root_units": [
    {
      "power": 1,
      "unit": {
        "id": "NISTu1",
        "name": "metre",
        "symbol": "m"
      },
      "prefix": {
        "id": "NISTp10_3",
        "name": "kilo",
        "symbol": "k"
      }
    },
    {
      "power": -1,
      "unit": {
        "id": "NISTu37",
        "name": "hour",
        "symbol": "h"
      },
      "prefix": null
    }
  ]
}