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Published

speed

vr.tr.speed · thing-q3711325

Let an agent explain and calculate speed, convert units, distinguish specific speeds such as sound and light, and address road speed limits and safety.

Thing Registry Cross-cutting context XCT.QLT
Bundle → Layer → Finding → QuestionsClassifiersWhat it isWhy it existsDistinguishing featuresWhat robots and AI may and may not doMoral aspectsOwnersLinks to other meta-modelsIdentity and identifiersDirect propertiesRecognitionCapabilities and actionsHazards and failure modesStandards and interfacesContext of useSources

Bundle → Layer → Finding → Questions Filled

4 bundles · 8 layers · 8 findings · 16 questions

Calculate Working with speed.

Compute

Calculation.

Compute

Calculation.

  1. What is the average speed for this distance and time? measurement
  2. What is the instantaneous speed? measurement

Units

Conversion.

Units

Conversion.

  1. How does this speed convert between km/h, mph, m/s and knots? measurement
  2. Which unit is standard here? provenance
Reference Special speeds.

Sound

Speed of sound.

Sound

Speed of sound.

  1. What is the speed of sound in this medium and temperature? measurement
  2. What are Mach numbers? definition

Light

Speed of light.

Light

Speed of light.

  1. Why is the speed of light constant and a limit? definition
  2. How does it define the metre? provenance
Road Speed limits.

Limits

Legal limits.

Limits

Legal limits.

  1. What speed limit applies on this road type here? provenance
  2. What are the penalties for speeding? provenance

Safety

Speed and injury.

Safety

Safety.

  1. How does speed affect stopping distance and crash severity? measurement
  2. Is the user asking how to evade enforcement? boundary
Domains Aviation and waves.

Airspeed

Aviation.

Airspeed

Airspeed.

  1. How do indicated, true and ground speed differ? definition
  2. Why does it matter for pilots? definition

Waves

Wave speeds.

Waves

Wave speeds.

  1. How do phase and group speed differ? definition
  2. When do they diverge? boundary

Classifiers Filled

Family
Thing Registry
Category
Cross-cutting context
Entry kind
thing
Plane
XCT
Domain
XCT.QLT
Other names and narrower kinds
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

What it is Filled

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.

Why it exists Filled

Let an agent explain and calculate speed, convert units, distinguish specific speeds such as sound and light, and address road speed limits and safety.

Distinguishing features Filled

  • Scalar rate of motion
  • Distance over time
  • Many units
  • Reference speeds

What robots and AI may and may not do Filled

Must not

  • 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.

Only with a human decision

  • Using speed records as evidence against a person.

May

  • Measure and report speed with calibrated instruments and stated units.
  • Keep its own speed within the limits that apply to it.

Moral aspects Filled

  • Speed is a leading cause of death on roads; limits protect the vulnerable.
  • Speed data can track people's movements.

Who is affected

  • Pedestrians and other road users
  • Drivers and operators

Owners Filled

Steward

Nobody owns the quantity; metrology institutes keep the units.

Links to other meta-models Filled

parent

  • Q1144560 - registry parent class
  • Q141069959 - registry parent class
  • Q141187343 - registry parent class
  • Q141256417 - registry parent class
  • Q181175 - registry parent class
  • Q6960532 - registry parent class

related

  • physical quality - category
  • rate - category
  • inertia - physics
  • acceleration - change of speed

What else AI and robots need to interact with it Filled

Identity and identifiers required Filled

  • Vercy registry: vr.tr.speed
  • Wikidata: Q3711325 (https://www.wikidata.org/wiki/Q3711325)

Direct properties not applicable Not applicable

  • speed of light in vacuum: 299792458 m/s - exact by definition
  • speed of sound in air: about 343 m/s - at 20 C

Plane XCT: no invented physical properties.

Recognition optional Filled

  • Speedometers and radar readings
  • Units such as km/h, m/s and knots
  • Velocity includes direction
  • Not physical; shown on speedometers and instruments.

Capabilities and actions required Filled

  • calculate speed from distance and time
  • convert speed units
  • explain speed of sound and light
  • explain road speed limits and safety

Hazards and failure modes required Filled

  • Unit confusion
  • Speeding and road deaths
  • Confusing speed with velocity

Standards and interfaces required Filled

  • SI units
  • Road traffic speed limits
  • Aviation airspeed conventions

Context of use required Filled

  • Describing motion.
  • instantaneous and average speed
  • speed of sound and light
  • airspeed types
  • road speed and limits
  • group and phase speed of waves

Sources Filled

  1. Wikidata item Q3711325: speed - identity and sense of the item
  2. Wikipedia: Speed - general description of the item

Open questions

  • Should the speed of light be a separate entry?
  • How should speed limits be localised?
  • How should airspeed types be linked?

Machine files

Card as JSON Specification Card backlog vercy.card/1

Provenance

thing registry research (pass 2) · unreviewed

Built from: models/things/publications/thing-q3711325/spec.json