speed
Measurements of motion over time, including distance traveled and rates of repeated rotation or swinging.
Speeds are measurements of object motion in time. They may refer to travel speed, which is the distance covered within a certain standard time (such as seconds, minutes, hours, days), or rates of repeated motion, which include the number of rotations or swings within a certain period.
A travel speed relates distance to elapsed time. A rate of repeated motion relates completed rotations or swings to elapsed time, without requiring the object to travel along an open route.
A duration instead states the time occupied by a defined movement or journey. Route length divided by journey duration gives an average travel speed, which can differ from the maximum reached.
More specific definitions
4 sub-definitions-
autowalk speed (max)
The maximum speed for any horizontal or inclined autowalk in a defined area. -
elevator speed (max)
The highest speed along its travel path attainable by the fastest elevator in a structure. -
escalator speed (max)
The highest speed along the diagonal travel path of any escalator within a defined structure or area. -
railcar speed (max)
The maximum speed normally achieved by a railcar on a rail pathway or amusement ride.
Related definitions
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angle
Measurements of geometric orientation, alignment, or opening expressed in degrees of arc. -
area
Measurements of bounded two-dimensional space, including cumulative areas across several levels. -
clearance
The free space allowed within a structure or pathway for entry and passage. -
depth
Vertical distances below a structure's base level, measured between specified upper and lower points. -
duration
Measurements of elapsed or expected time between a defined beginning and a defined end. -
elevation
Vertical positions of objects or reference points measured above, below, or at mean sea level. -
energy
Measurements of energy handled by an object and the power at which it is produced or consumed. -
height
Vertical distances above a structure's base level, measured between specified lower and upper points. -
hill size
The size category of a ski jumping hill, measured from the take-off point to the end of the landing area. -
humidity
Measurements of moisture in air or other gases as an absolute quantity or a percentage of saturation. -
length
Measurements of horizontal, diagonal, or travel distances between two defined extreme points. -
mass
Measurements of material quantity, commonly reported as weight in kilograms, pounds, or tons. -
pressure
Measurements of force per unit area, expressed as absolute pressure or a difference from a reference. -
strength
Measurements of the capacity of a built object to withstand various forms of stress. -
temperature
Measurements of how hot or cold an object or space is, including temperature ranges and limits. -
thickness
Measurements of the perpendicular distance between two sides of the same component. -
volume
Measurements of three-dimensional space displaced or enclosed within specified boundaries.