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Encyclopedia > Newton

The Newton (symbol: N) is the SI derived unit of force, named after Sir Isaac Newton in recognition of his work on classical mechanics. // A newton, the SI unit of force (named in honor of Sir Isaac Newton). ... â€œSIâ€ redirects here. ... SI derived units are part of the SI system of measurement units and are derived from the seven SI base units. ... In physics, a net force acting on a body causes that body to accelerate; that is, to change its velocity. ... Sir Isaac Newton in Knellers portrait of 1689. ... Classical mechanics (commonly confused with Newtonian mechanics, which is a subfield thereof) is used for describing the motion of macroscopic objects, from projectiles to parts of machinery, as well as astronomical objects, such as spacecraft, planets, stars, and galaxies. ...

## Contents

The Newton is the unit of force derived in the SI system; it is equal to the amount of force required to give a mass of one kilogram an acceleration of one meter per second squared . Algebraically: Kg redirects here. ... Acceleration is the time rate of change of velocity and/or direction, and at any point on a velocity-time graph, it is given by the slope of the tangent to the curve at that point. ... Metres per second squared is the SI derived unit of acceleration (scalar) and (vector), defined by distance in metres divided by time in seconds and again divided by time in seconds. ... ${rm 1~N = 1~frac{kgcdot m}{s^2}}.$

## Examples

• 1 N is the force of earth's gravity on an object with a mass of about 102 g (19.8 kg) (such as a small apple).
• On Earth's surface, a mass of 1 kg exerts a force of approximately 9.81 N [down] (or 1 kgf). The approximation of 1 kg corresponding to 10 N is sometimes used as a rule of thumb in everyday life and in engineering.
• The decaNewton (daN) = 10 N is increasingly used when specifying load bearing capacity of items such as ropes and anti-vibration mounts, being approximately equivalent to the more familiar non-SI unit of force, the kgf.
• The force of Earth's gravity on a human being with a mass of 70 kg is approximately 687 N.
• The scalar product of force and distance is energy. Thus, in SI units, a force of 1 N exerted over a distance of 1 m is 1 N·m = 1 joule, the SI unit of energy.
• Because a Newton is a small force, it is common to see forces expressed in kiloNewtons or kN, where 1 kN = 1 000 N.
• A metric tonne (1 000 kg) exerts a force of 9.8 kN (or 1 000 kgf) under standard gravity conditions on Earth.

The unit kilogram-force (kgf, often just kg) or kilopond (kp) is defined as the force exerted by one kilogram of mass in standard Earth gravity. ... The unit kilogram-force (kgf, often just kg) or kilopond (kp) is defined as the force exerted by one kilogram of mass in standard Earth gravity. ... In mathematics, the dot product (also known as the scalar product and the inner product) is a function (·) : V × V → F, where V is a vector space and F its underlying field. ... The joule (IPA: or ) (symbol: J) is the SI unit of energy. ... A tonne (also called metric ton) is a non-SI unit of mass, accepted for use with SI, defined as: 1 tonne = 103 kg (= 106 g). ... g (also gee, g-force or g-load) is a non-SI unit of acceleration defined as exactly 9. ... Results from FactBites:

 Newton Public Schools (268 words) Susan Linn, Newton Public Schools Grants Coordinator, 617.559.9038. In order to maximize parents' flexibility in securing the best possible program for their elementary school children next year, we are providing an extended opportunity for out-of-district placements. Out-of-District placements for students who wish to attend an elementary school in Newton other than their district school are limited.
 Isaac Newton - Wikipedia, the free encyclopedia (5363 words) Newton was born in Woolsthorpe-by-Colsterworth (at Woolsthorpe Manor), a hamlet in the county of Lincolnshire. Newton was also a member of the Parliament of England from 1689 to 1690 and in 1701, but his only recorded comments were to complain about a cold draft in the chamber and request that the window be closed. Newton rejected the church's doctrine of the trinity, and was probably a follower of arianism.
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