{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.acceleration","code":"thing-q11376","url":"https://ver.cy/models/thing/q11376/","name":"acceleration","alternateNames":["acceleration of free fall","uniform acceleration","tidal acceleration","deceleration","social acceleration","proper acceleration","centripetal acceleration","tangential acceleration","centrifugal acceleration","Coriolis acceleration","gravitational acceleration","sound particle acceleration"],"kind":"thing","status":"published","version":"0.2.0-wave.2","language":"en","classifiers":{"family":"Thing Registry","category":"Cross-cutting context","entryKind":"thing","plane":"XCT","domain":["XCT.QLT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The rate of change of velocity with time, a vector quantity measured in metres per second squared, including the acceleration of free fall, uniform and variable acceleration, deceleration, proper acceleration felt by an accelerometer and tidal acceleration in orbital mechanics; acceleration links force and mass through Newton second law and appears in vehicles, sports, engineering and everyday experience, and metaphorically in social acceleration.","purpose":"Let an agent explain acceleration and compute it in problems, distinguish related concepts such as proper and tidal acceleration, describe measurement, and separate metaphorical senses.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Vector","Second derivative of position","Linked to force","Measurable"],"structure":{"bundles":[{"id":"define","name":"Define","description":"What acceleration is.","layers":[{"id":"definition","name":"Definition","description":"Definition and units.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What is acceleration, and how does it relate to velocity, force and mass?","kind":"definition"},{"text":"How do uniform, variable and centripetal acceleration differ?","kind":"definition"}]}]},{"id":"kinds","name":"Kinds","description":"Special kinds.","findings":[{"id":"kinds-finding","name":"Kinds","description":"Kinds.","questions":[{"text":"What are the acceleration of free fall, proper acceleration and tidal acceleration?","kind":"definition"},{"text":"Is social acceleration or another metaphorical sense meant?","kind":"boundary"}]}]}]},{"id":"compute","name":"Compute","description":"Solving problems.","layers":[{"id":"problems","name":"Problems","description":"Kinematics problems.","findings":[{"id":"problems-finding","name":"Problems","description":"Problems.","questions":[{"text":"What is the acceleration in this problem, and how are the kinematic equations applied?","kind":"action"},{"text":"How is acceleration found from a velocity-time graph?","kind":"action"}]}]},{"id":"vehicles","name":"Vehicles","description":"Everyday acceleration.","findings":[{"id":"vehicles-finding","name":"Vehicles","description":"Everyday.","questions":[{"text":"What accelerations do cars, trains, lifts and rides produce, and what limits apply for comfort and safety?","kind":"provenance"},{"text":"How is g-force related?","kind":"definition"}]}]}]},{"id":"measure","name":"Measure","description":"Measuring acceleration.","layers":[{"id":"accelerometers","name":"Accelerometers","description":"Accelerometers.","findings":[{"id":"accelerometers-finding","name":"Accelerometers","description":"Accelerometers.","questions":[{"text":"How do accelerometers work, and why do they measure proper acceleration?","kind":"definition"},{"text":"Where are they used, from phones to aircraft?","kind":"provenance"}]}]},{"id":"gravity","name":"Gravity","description":"Free fall and gravity.","findings":[{"id":"gravity-finding","name":"Gravity","description":"Gravity.","questions":[{"text":"How is the acceleration of free fall measured, and how does it vary over the Earth?","kind":"provenance"},{"text":"Why do all objects fall alike in a vacuum?","kind":"definition"}]}]}]},{"id":"learn","name":"Learn","description":"Teaching and history.","layers":[{"id":"teach","name":"Teach","description":"Teaching acceleration.","findings":[{"id":"teach-finding","name":"Teach","description":"Teaching.","questions":[{"text":"How can acceleration be taught with experiments and graphs?","kind":"action"},{"text":"Which misconceptions arise?","kind":"provenance"}]}]},{"id":"history","name":"History","description":"History.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"How did Galileo and Newton establish the concept of acceleration?","kind":"provenance"},{"text":"How does relativity treat acceleration?","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Measure and report acceleration with units and frame of reference.","Explain acceleration and Newton's laws for learners."],"mustNot":["Accelerate a vehicle or machine beyond safe limits for people aboard or nearby.","Disable accelerometers used for crash detection or safety systems.","Report readings without units or with the wrong sign.","Present proper and coordinate acceleration as the same."],"requiresHuman":["Changing acceleration limits in vehicles or lifts."]},"ethics":{"considerations":["High acceleration injures people in crashes, rides and flights.","Accelerometer data can reveal personal movement and activity."],"affectedParties":["Passengers","Learners","People wearing sensors"]},"owners":{"steward":"Nobody owns the concept; the operator answers for each vehicle or machine.","roles":[],"masterSystems":[]},"relations":[{"target":"Q107715","type":"parent","note":"registry parent class"},{"target":"Q135524371","type":"parent","note":"registry parent class"},{"target":"Q2672914","type":"parent","note":"registry parent class"},{"target":"Q30337763","type":"parent","note":"registry parent class"},{"target":"vector quantity","type":"related","note":"category"},{"target":"physical quantity","type":"related","note":"category"},{"target":"intensive quantity","type":"related","note":"quantity classification"},{"target":"constant","type":"related","note":"gravitational acceleration as a constant"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.acceleration","Wikidata: Q11376 (https://www.wikidata.org/wiki/Q11376)"]},"properties":{"applicability":"not-applicable","items":[]},"recognition":{"applicability":"optional","items":["Rate of change of velocity","Vector quantity","Speed is scalar and velocity includes direction","Not physical; felt as pushes and pulls in vehicles and lifts."]},"capabilities":{"applicability":"required","items":["explain and compute acceleration","distinguish kinds of acceleration","describe measurement","separate metaphorical senses"]},"hazards":{"applicability":"required","items":["Confusing acceleration with velocity","Sign and direction errors","Injury from excessive acceleration"]},"interfaces":{"applicability":"required","items":["SI units and definitions","Accelerometer calibration standards","Vehicle and ride safety limits on acceleration"]},"context":{"applicability":"required","items":["Change of velocity over time.","uniform and variable acceleration","acceleration of free fall","centripetal acceleration","proper acceleration","tidal acceleration"]}},"sources":[{"title":"Wikidata item Q11376: acceleration","url":"https://www.wikidata.org/wiki/Q11376","note":"identity and sense of the item"},{"title":"Wikipedia: Acceleration","url":"https://en.wikipedia.org/wiki/Acceleration","note":"general description of the item"}],"openQuestions":["Should free fall be a separate entry?","How should measurement standards be linked?","How should metaphorical senses be split?"],"resources":{"spec":"/models/things/publications/thing-q11376/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q11376/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T22:19:13Z","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 2026-10-06T19:51:53+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}}