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A newton is defined as 1 kg⋅m/s 2 (it is a named derived unit defined in terms of the SI base units). [1]: 137 One newton is, therefore, the force needed to accelerate one kilogram of mass at the rate of one metre per second squared in the direction of the applied force.
Conversions between units in the metric system are defined by their prefixes (for example, 1 kilogram = 1000 grams, 1 milligram = 0.001 grams) and are thus not listed in this article. Exceptions are made if the unit is commonly known by another name (for example, 1 micron = 10 −6 metre).
metric equivalent English French square mile mille carré: 640 acres 2.589988110336 km 2: acre: acre: 4,840 sq yd 4,046.856422 m 2: square rod perche carrée: 30 + 1 ⁄ 4 sq yd 25.29285264 m 2: square yard yard carré or verge carrée: a superficial area equal to that of a square each side of which measures one yard 8361.2736 cm 2: square foot ...
The SI has special names for 22 of these coherent derived units (for example, hertz, the SI unit of measurement of frequency), but the rest merely reflect their derivation: for example, the square metre (m 2), the SI derived unit of area; and the kilogram per cubic metre (kg/m 3 or kg⋅m −3), the SI derived unit of density.
Under Sir Isaac Newton's 338-year-old laws of motion and an important formula that sprang from his work, F = ma, an object with a mass, m, of one kilogram accelerates, a, at one meter per second per second (about one-tenth the acceleration due to Earth's gravity) [4] when acted upon by a force, F, of one newton.
m −1 ⋅kg⋅s −2: volt per metre V/m electric field strength: m⋅kg⋅s −3 ⋅A −1: coulomb per cubic metre C/m 3: electric charge density: m −3 ⋅s⋅A coulomb per square metre C/m 2: surface charge density, electric flux density, electric displacement: m −2 ⋅s⋅A farad per metre F/m permittivity: m −3 ⋅kg −1 ⋅s 4 ⋅ ...
newton-metre (N⋅m) L 2 M T −2: bivector (or pseudovector in 3D) Velocity: v →: Moved distance per unit time: the first time derivative of position m/s L T −1: vector Wavevector: k →: Repetency or spatial frequency vector: the number of cycles per unit distance m −1: L −1: vector Weight: w: Gravitational force on an object newton ...
The metre, kilogram, second system of units, also known more briefly as MKS units or the MKS system, [1] [2] [3] is a physical system of measurement based on the metre, kilogram, and second (MKS) as base units. Distances are described in terms of metres, mass in terms of kilograms and time in seconds.