{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.speed","code":"thing-q3711325","url":"https://ver.cy/models/thing/q3711325/","name":"speed","alternateNames":["Tupolev Tu-444","excessive speed","speed of sound","indicated airspeed","sound phase speed","group speed of sound","speed of longitudinal sound waves","speed of transversal sound waves","speed of sound in plasma","speeds of sound of the elements","flow speed","characteristic speed"],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Cross-cutting context","entryKind":"thing","plane":"XCT","domain":["XCT.QLT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The rate at which an object covers distance, a scalar quantity measured in units such as metres per second or kilometres per hour, distinct from velocity which includes direction; specific speeds include the speed of sound, the speed of light, airspeed in aviation and legal speed limits on roads.","purpose":"Let an agent explain and calculate speed, convert units, distinguish specific speeds such as sound and light, and address road speed limits and safety.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Scalar rate of motion","Distance over time","Many units","Reference speeds"],"structure":{"bundles":[{"id":"calculate","name":"Calculate","description":"Working with speed.","layers":[{"id":"compute","name":"Compute","description":"Calculation.","findings":[{"id":"compute-finding","name":"Compute","description":"Calculation.","questions":[{"text":"What is the average speed for this distance and time?","kind":"measurement"},{"text":"What is the instantaneous speed?","kind":"measurement"}]}]},{"id":"units","name":"Units","description":"Conversion.","findings":[{"id":"units-finding","name":"Units","description":"Conversion.","questions":[{"text":"How does this speed convert between km/h, mph, m/s and knots?","kind":"measurement"},{"text":"Which unit is standard here?","kind":"provenance"}]}]}]},{"id":"reference","name":"Reference","description":"Special speeds.","layers":[{"id":"sound","name":"Sound","description":"Speed of sound.","findings":[{"id":"sound-finding","name":"Sound","description":"Speed of sound.","questions":[{"text":"What is the speed of sound in this medium and temperature?","kind":"measurement"},{"text":"What are Mach numbers?","kind":"definition"}]}]},{"id":"light","name":"Light","description":"Speed of light.","findings":[{"id":"light-finding","name":"Light","description":"Speed of light.","questions":[{"text":"Why is the speed of light constant and a limit?","kind":"definition"},{"text":"How does it define the metre?","kind":"provenance"}]}]}]},{"id":"road","name":"Road","description":"Speed limits.","layers":[{"id":"limits","name":"Limits","description":"Legal limits.","findings":[{"id":"limits-finding","name":"Limits","description":"Legal limits.","questions":[{"text":"What speed limit applies on this road type here?","kind":"provenance"},{"text":"What are the penalties for speeding?","kind":"provenance"}]}]},{"id":"safety","name":"Safety","description":"Speed and injury.","findings":[{"id":"safety-finding","name":"Safety","description":"Safety.","questions":[{"text":"How does speed affect stopping distance and crash severity?","kind":"measurement"},{"text":"Is the user asking how to evade enforcement?","kind":"boundary"}]}]}]},{"id":"domains","name":"Domains","description":"Aviation and waves.","layers":[{"id":"airspeed","name":"Airspeed","description":"Aviation.","findings":[{"id":"airspeed-finding","name":"Airspeed","description":"Airspeed.","questions":[{"text":"How do indicated, true and ground speed differ?","kind":"definition"},{"text":"Why does it matter for pilots?","kind":"definition"}]}]},{"id":"waves","name":"Waves","description":"Wave speeds.","findings":[{"id":"waves-finding","name":"Waves","description":"Wave speeds.","questions":[{"text":"How do phase and group speed differ?","kind":"definition"},{"text":"When do they diverge?","kind":"boundary"}]}]}]}]},"agentConduct":{"may":["Measure and report speed with calibrated instruments and stated units.","Keep its own speed within the limits that apply to it."],"mustNot":["Exceed a speed limit or safe speed when the agent controls a vehicle or machine.","Help evade speed enforcement.","Confuse speed with velocity, or mix units, in safety-relevant output."],"requiresHuman":["Using speed records as evidence against a person."]},"ethics":{"considerations":["Speed is a leading cause of death on roads; limits protect the vulnerable.","Speed data can track people's movements."],"affectedParties":["Pedestrians and other road users","Drivers and operators"]},"owners":{"steward":"Nobody owns the quantity; metrology institutes keep the units.","roles":[],"masterSystems":[]},"relations":[{"target":"Q1144560","type":"parent","note":"registry parent class"},{"target":"Q141069959","type":"parent","note":"registry parent class"},{"target":"Q141187343","type":"parent","note":"registry parent class"},{"target":"Q141256417","type":"parent","note":"registry parent class"},{"target":"Q181175","type":"parent","note":"registry parent class"},{"target":"Q6960532","type":"parent","note":"registry parent class"},{"target":"physical quality","type":"related","note":"category"},{"target":"rate","type":"related","note":"category"},{"target":"inertia","type":"related","note":"physics"},{"target":"acceleration","type":"related","note":"change of speed"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.speed","Wikidata: Q3711325 (https://www.wikidata.org/wiki/Q3711325)"]},"properties":{"applicability":"not-applicable","items":["speed of light in vacuum: 299792458 m/s - exact by definition","speed of sound in air: about 343 m/s - at 20 C"]},"recognition":{"applicability":"optional","items":["Speedometers and radar readings","Units such as km/h, m/s and knots","Velocity includes direction","Not physical; shown on speedometers and instruments."]},"capabilities":{"applicability":"required","items":["calculate speed from distance and time","convert speed units","explain speed of sound and light","explain road speed limits and safety"]},"hazards":{"applicability":"required","items":["Unit confusion","Speeding and road deaths","Confusing speed with velocity"]},"interfaces":{"applicability":"required","items":["SI units","Road traffic speed limits","Aviation airspeed conventions"]},"context":{"applicability":"required","items":["Describing motion.","instantaneous and average speed","speed of sound and light","airspeed types","road speed and limits","group and phase speed of waves"]}},"sources":[{"title":"Wikidata item Q3711325: speed","url":"https://www.wikidata.org/wiki/Q3711325","note":"identity and sense of the item"},{"title":"Wikipedia: Speed","url":"https://en.wikipedia.org/wiki/Speed","note":"general description of the item"}],"openQuestions":["Should the speed of light be a separate entry?","How should speed limits be localised?","How should airspeed types be linked?"],"resources":{"spec":"/models/things/publications/thing-q3711325/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q3711325/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T15:26:26Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"not-applicable","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-06T19:51:59+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.properties":"Plane XCT: no invented physical properties."},"score":1.0}}