Property talk:P4137

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muzzle velocity
speed of a projectile at the moment it leaves the muzzle of a gun

Description	the speed of a projectile at the moment it leaves the muzzle of a gun
Represents	muzzle velocity (Q920165)
Data type	Quantity
Template parameter	velocity at en:Template:infobox weapon
Domain	According to this template: weapon According to statements in the property: projectile weapon (Q1194773) or weapon model (Q15142894) When possible, data should only be stored as statements
Allowed units	metre per second (Q182429), kilometre per hour (Q180154), foot per second (Q748716), mile per hour (Q211256) or kilometre per second (Q3674704)
Example	AK-47 (Q37116) → 715 metre per second
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Minimum and maximum Items with highest numeric value Items with lowest numeric value Database reports/Complex constraint violations/P4137 Database reports/Constraint violations/P4137 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 148 Main statement 147 99.3% of uses Qualifier 1 0.7% of uses

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Units: “metre per second (Q182429), kilometre per hour (Q180154), foot per second (Q748716), mile per hour (Q211256), kilometre per second (Q3674704)”: value unit must be one of listed. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4137#Units

Type “projectile weapon (Q1194773), weapon model (Q15142894)”: item must contain property “instance of (P31)” with classes “projectile weapon (Q1194773), weapon model (Q15142894)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4137#Type Q1194773, Q15142894, SPARQL

Scope is as main value (Q54828448): the property must be used by specified way only (Help)

List of violations of this constraint: Database reports/Constraint violations/P4137#Scope, hourly updated report, SPARQL

Check units
Unit must to be a unit of speed (Q15222637) (Help)
Violations query: SELECT ?item ?unit WHERE { ?item p:P4137/psv:P4137/wikibase:quantityUnit ?unit. MINUS { ?unit wdt:P31 wd:Q15222637. }. }
List of this constraint violations: Database reports/Complex constraint violations/P4137#Check units