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===Meaning===
A '''force''' is something which can make an object; speed up, slow down or change shape.
: Singular [[Noun]]: '''Force''': Plural [[Noun]]: '''Forces'''
===About Forces===
: A '''force''' can make an object speed up. When you let go of a pencil it will fall because a '''force''' called [[weight]] is making it speed up.
==Key Stage 3==
===Meaning===
A '''force ''' is an influence that can change the [[speed]], [[direction]] or shape of an [[object]]. ===About Forces===: [[Force]]s can be split into two groups, [[Contact Force]]s and [[Non-contact Force]]s.{| class="wikitable"|-| style="height:20px; width:200px; text-align:center;" |'''Contact Forces'''| style="height:20px; width:200px; text-align:center;" |'''Non-contact Forces'''|-| style="height:20px; width:200px; text-align:left;" |: [[Friction]]: [[Air Resistance]]: [[Water Resistance]]: [[Upthrust]]: [[Driving Force]]: [[Thrust]]| style="height:20px; width:200px; text-align:left;" |: [[Gravitational Force]] ([[Weight]]): [[Magnetic Force]]: [[Electrostatic Force]]|}: [[Force]]s can cause an [[object]] to [[accelerate]].: A pair of opposing [[force]]s can twist, stretch or squash an [[object]]. This is known as [[deformation]]. ===Representing Forces===: [[Force]]s can be represented in a [[diagram]] with arrows that show the [[magnitude]] and [[direction]] of the [[force]]. A bigger arrow means a bigger [[force]].