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: '''Driving force''' is a [[force]] so it is [[Measure|measured]] in [[Newton]]s.
: '''Driving force''' is a [[Contact Force|contact force]] because an engine needs to make contact against a surface and use [[friction]] to [[accelerate]] the motion of the [[object]].
: '''Driving Force''' can cause a vehicle to [[accelerate]] and can act to counter [[Air Resistance|air resistance]] and [[friction]] to keep a vehicle travelling at a constant [[speed]].
===Example===
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| style="height:20px; width:200px; text-align:center;" |The '''driving force''' of the car acts in the direction of motion.
|}
==Key Stage 4==
===Meaning===
'''Driving force''' is a [[force]] provided an engine.
===About Driving Force===
: '''Driving force''' is a [[force]] so it is [[Measure|measured]] in [[Newton]]s.
: '''Driving force''' is a [[Contact Force|contact force]] because an engine needs to make contact against a surface and use [[friction]] to [[accelerate]] the motion of the [[object]].
: Without [[friction]] between two surfaces there cannot be a [[Driving Force|driving force]].
: '''Driving Force''' can cause a vehicle to [[accelerate]] and can act to counter [[Air Resistance|air resistance]] to keep a vehicle travelling at a constant [[speed]].
===Example===
{| class="wikitable"
|-
|[[File:DrivingForceCar.png|center|400px]]
|-
| style="height:20px; width:200px; text-align:center;" |The '''driving force''' of the car acts to push the road backwards. The road provides a [[Reaction Force|reaction force]] to [[accelerate]] the car forwards.
|}