Browse Definitions :
Definition

meter per second (m/s or m/sec)

The meter per second (symbolized m/s or m/sec) is the Standard International ( SI ) unit of linear speed. This quantity can be defined in either of two senses: average or instantaneous.

Average linear speed is obtained by measuring the distance in meter s that an object travels in a certain number of second s, and then dividing the distance by the time. If s avg represents the average speed of an object (in meters per second) during a time interval t (in seconds), and the distance traveled in that time is equal to d (in meters), then:

s avg = d / t

Instantaneous linear speed is more difficult to intuit, because it involves an expression of motion over an "infinitely short" interval of time. Let p represent a specific point in time. Suppose an object is in motion at about that time. The average speed can be measured over increasingly short time intervals centered at p , for example:

[ p -4, p +4]
[ p -3, p +3]
[ p -2 , p +2]
[ p -1, p +1]
[ p -0.5, p +0.5]
[ p -0.25, p +0.25]
.
.
.
[ p - x , p + x ]
.
.
.

where the added and subtracted numbers represent seconds. The instantaneous speed, s inst , is the limit of the measured average speed as x approaches zero. This is a theoretical value, because it cannot be obtained except by inference from measurements made over progressively shorter time spans.

It is important to realize that speed is not the same thing as velocity. Speed is a Scalar (dimensionless) quantity, while velocity is a vector quantity consisting of speed and direction. We might say a car is traveling at 20 m/s, and this tells us its speed. Or we might say the car is traveling at 20 m/s at a compass bearing of 25 degrees (north-by-northeast); this tells us its velocity. As with speed, we might specify either the average velocity over a period of time, or the instantaneous velocity at an exact moment in time.

Also see meter per second squared and Standard International ( SI ) System of Units.

This was last updated in March 2011
Networking
  • network traffic

    Network traffic is the amount of data that moves across a network during any given time.

  • dynamic and static

    In general, dynamic means 'energetic, capable of action and/or change, or forceful,' while static means 'stationary or fixed.'

  • MAC address (media access control address)

    A MAC address (media access control address) is a 12-digit hexadecimal number assigned to each device connected to the network.

Security
  • security information and event management (SIEM)

    Security information and event management (SIEM) is an approach to security management that combines security information ...

  • Evil Corp

    Evil Corp is an international cybercrime network that uses malicious software to steal money from victims' bank accounts and to ...

  • Trojan horse

    In computing, a Trojan horse is a program downloaded and installed on a computer that appears harmless, but is, in fact, ...

CIO
  • green IT (green information technology)

    Green IT (green information technology) is the practice of creating and using environmentally sustainable computing.

  • benchmark

    A benchmark is a standard or point of reference people can use to measure something else.

  • spatial computing

    Spatial computing broadly characterizes the processes and tools used to capture, process and interact with 3D data.

HRSoftware
  • employee self-service (ESS)

    Employee self-service (ESS) is a widely used human resources technology that enables employees to perform many job-related ...

  • learning experience platform (LXP)

    A learning experience platform (LXP) is an AI-driven peer learning experience platform delivered using software as a service (...

  • talent acquisition

    Talent acquisition is the strategic process employers use to analyze their long-term talent needs in the context of business ...

Customer Experience
  • BOPIS (buy online, pick up in-store)

    BOPIS (buy online, pick up in-store) is a business model that allows consumers to shop and place orders online and then pick up ...

  • real-time analytics

    Real-time analytics is the use of data and related resources for analysis as soon as it enters the system.

  • database marketing

    Database marketing is a systematic approach to the gathering, consolidation and processing of consumer data.

Close