The inch per second is a
unit of
speed
In kinematics, the speed (commonly referred to as ''v'') of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a non-negative scalar quantity. Intro ...
or
velocity
Velocity is a measurement of speed in a certain direction of motion. It is a fundamental concept in kinematics, the branch of classical mechanics that describes the motion of physical objects. Velocity is a vector (geometry), vector Physical q ...
. It expresses the
distance in
inch
The inch (symbol: in or prime (symbol), ) is a Units of measurement, unit of length in the imperial units, British Imperial and the United States customary units, United States customary System of measurement, systems of measurement. It is eq ...
es (''in'') traveled or displaced, divided by
time
Time is the continuous progression of existence that occurs in an apparently irreversible process, irreversible succession from the past, through the present, and into the future. It is a component quantity of various measurements used to sequ ...
in
second
The second (symbol: s) is a unit of time derived from the division of the day first into 24 hours, then to 60 minutes, and finally to 60 seconds each (24 × 60 × 60 = 86400). The current and formal definition in the International System of U ...
s (''s'', or ''sec''). The equivalent
SI unit is the
metre per second
The metre per second is the unit of both speed (a scalar (physics), scalar quantity) and velocity (a Vector (mathematics and physics), vector quantity, which has direction and magnitude) in the International System of Units (SI), equal to the sp ...
.
Abbreviations include in/s,
in/sec, ips,
and less frequently in s
−1.
Conversions
1 inch per second is equivalent to:
: = 0.0254
metres per second (exactly)
: = or 0.08
3 feet per second (exactly)
: = or 0.056
81 miles per hour (exactly)
: = 0.09144
km·h−1 (exactly)
1
metre per second
The metre per second is the unit of both speed (a scalar (physics), scalar quantity) and velocity (a Vector (mathematics and physics), vector quantity, which has direction and magnitude) in the International System of Units (SI), equal to the sp ...
≈ 39.370079 inches per second (approximately)
1
foot per second
The foot per second (plural feet per second) is a unit of both speed (scalar) and velocity (vector quantity, which includes direction). It expresses the distance in feet (ft) traveled or displaced, divided by the time in seconds (s).
The corre ...
= 12 inches per second (exactly)
1
mile per hour = 17.6 inches per second (exactly)
1
kilometre per hour
The kilometre per hour ( SI symbol: km/h; non-SI abbreviations: kph, kmph, km/hr) is a unit of speed, expressing the number of kilometres travelled in one hour.
History
Although the metre was formally defined in 1799, the term "kilometres per h ...
≈ 10.936133 inches per second (approximately)
Uses
In
magnetic tape sound recording,
magnetic tape
Magnetic tape is a medium for magnetic storage made of a thin, magnetizable coating on a long, narrow strip of plastic film. It was developed in Germany in 1928, based on the earlier magnetic wire recording from Denmark. Devices that use magnetic ...
speed
In kinematics, the speed (commonly referred to as ''v'') of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a non-negative scalar quantity. Intro ...
is often quoted in inches per second (abbreviated "ips").
In
computer mice
A computer mouse (plural mice; also mouses) is a hand-held pointing device that detects Plane (mathematics), two-dimensional motion relative to a surface. This motion is typically translated into the motion of the Cursor (user interface)#Po ...
sensitivity is also often referred to in inches per second (abbreviated as "ips") along with
g force
The g-force or gravitational force equivalent is a mass-specific force (force per unit mass), expressed in units of standard gravity (symbol ''g'' or ''g''0, not to be confused with "g", the symbol for grams).
It is used for sustained a ...
.
In
rotorcraft
A rotary-wing aircraft, rotorwing aircraft or rotorcraft is a heavier-than-air aircraft with rotor wing, rotary wings that spin around a vertical mast to generate lift (force), lift. Part 1 (Definitions and Abbreviations) of Subchapter A of Chapt ...
health monitoring, rotor and shaft induced vibration levels are often quoted in inches per second.
See also
*
Orders of magnitude (speed)
To help compare different orders of magnitude, the following list describes various speed levels between approximately 2.2 m/s and 3.0 m/s (the speed of light). Values in bold are exact.
List of orders of magnitude for speed
See als ...
References
{{DEFAULTSORT:Inch Per Second
Units of velocity