Vectors can only be added, subtracted or multiplied using mathematical procedures that take account of the co-ordinates. A vector is defined as an element of a vector space.
Vector space : vector spaces are applied throughout mathematics, science and engineering. They are the linear-algebraic notion to deal with systems of linear equations; offer a framework for Fourier expansion or provide an environment that can be used for solution techniques for partial differential equations.
Velocity : v : the rate of change of position and is a vector quantity as both speed and direction are required to define it.
The SI units are metres per second: (m/s).
v = u + at where v = velocity, u = start velocity, a = acceleration in m/s2 and t = time.
Vibration at Work Regulations : The Control of Vibration at Work Regulations 2005 (the Vibration Regulations), came into force on 6 July 2005 and aim to protect workers from risks to health from vibration.
Volt : V : the derived SI Unit of electric potential; the potential difference between two points on a conductor carrying a current of 1 Ampere, when the Power dissipated between these points is 1 watt
Voltage Level : LV : dB (1 V rms) : voltage relative to 1 volt, regardless of impedance.
Lv = 20 lg (V/Vo) dBV
Reference voltage Vo = 1 volt = 0 dB
Volume : V : the amount of space that an object or substance occupies, the SI unit is the cubic metre : m3
Volumetric Flow Rate : Q : is the volume of fluid which passes through a given surface per unit time.
Q = v · A where v = velocity, A = area/surface and the SI units are m3/s.
Volumetric Flux : q : is the Volumetric Flow Rate across a unit area. SI units m3·s-1·m-2