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===About Forces===

: [[Force]]s can be [[measure]]d using a [[Newton Meter]].

: [[Force]]s can be split into two groups, [[Contact Force]]s and [[Non-contact Force]]s.

===Force Arrows===

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==Key Stage 4==

===Meaning===

===About Forces===

: The [[SI Unit]] of [[force]] is the [[Newton]] (N).

: [[Force]]s follow [[Newton's Third Law]] which states that if an [[object]] 'A' exerts a [[force]] on [[object]] 'B'; then [[object]] 'B' will exert a [[force]] on [[object]] 'A' which is equal in [[magnitude]] but opposite in direction to the original [[force]]. These are sometimes called an [[Action Force|action force]] and a [[Reaction Force|reaction force]]. This means:

:: When you push a wall with a [[force]] of 5N ([[Action Force]]), the wall pushes back with a [[force]] of 5N ([[Reaction Force]]).

===Forces as Vectors===

: [[Force]]s have both [[magnitude]] and direction so they are considered [[vector]]s.

====Forces on a Free Body Diagram====

: To show [[force]] [[vector]]s a [[Free Body Diagram]] can be used, this indicates the [[magnitude]] and direction of the [[force]]s.

|[[File:ResolvingVectors1.png|center|200px]]

|[[File:ResolvingVectors2.png|center|200px]]

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| style="height:100px; width:200px; text-align:left;"|The two [[force]]s are redrawn in a a [[Scale Diagram]] with scale is 1000N = 1cm placing the start of one [[vector]] [[force]] at the end of the other.

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