## K : Sound and Vibration • definitions • terms • units • measurements ...

**k : kilo** a SI prefix = 1000

**kHz : kilohertz** 1 kHz = 1000 Hz = 1000 Hertz.

**kilo (k)** an SI prefix = 10^{3} • see other SI units

**kilogram (kg)**, the base unit of mass in the SI and MKS versions of the metric system. The kilogram is defined as the mass of the standard kilogram.

1 kg = 1000 g ~ 2.204 pounds

**kilogram metre (kg·m)**

1 : a metric unit of work or energy equal to 9.806 65 joules (J).

2 : a metric unit of torque equal to 9.806 65 newton metres (N·m).

**kilogram metre squared per second squared (kg·m**^{2}·s^{-2}), energy or work.

The derived SI unit is the joule J :
1 kg·m^{2}·s^{-2} = 1 J = 1 N·m = 1 W·s = 10^{7} ergs

**kilogram metre per second (kg·m/s)** is the SI unit of momentum. 1 kg·m/s = 1 N·s

**kilogram metre per second squared (kg·m/s²)**, a measurement of force

1 kg·m·s^{-2} = 1 N = 10^{5} dynes, the derived SI unit is the newton

**kilogram per cubic metre (kg/m**^{3}), see •
density •
sound energy density

**kilogram per metre per second squared (kg/m/s²)**, a measurement of pressure

1 kg/m/s^{2} = 1 pascal (Pa) = 1 N/m^{2} = 1 J/m^{3} = 10^{-5} bar

See also •

pascal.

**kilohertz (kHz)** : 1000 Hz.

**kilopascal (kPa)**, a common metric unit of pressure.

1 kilopascal = 1000 pascals (Pa) = 10 millibars (mb)

**Kinetic Energy**, all moving things have kinetic energy. It is energy possessed by an object due to its motion or movement, measured in joules.

See also •

sound energy density

*Kt* ▫

tone assessment parameter
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