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===About Air Resistance===
: '''Air resistance''' is a [[Contact Force|contact force]].
: '''Air resistance''' can only happen to an object surrounded by air. It does not happen to objects underwater or in space.
===About Air Resistance===
: '''Air resistance''' is a [[force]] so it is [[Measure|measured]] in [[Newton]]s.
: '''Air resistance''' is a [[Contact Force|contact force]] because it can only exist when an [[object]] is moving in the [[air]].
: '''Air resistance''' increases with [[speed]]. The faster you travel the greater the '''air resistance'''.
: '''Air resistance''' depends on the [[Surface Area|surface area]] facing the direction of motion. The bigger the [[Surface Area|surface area]], the larger the '''air resistance'''
===Examples===
{| class="wikitable"
|-
|[[File:AirResistanceBowlingBall.png|center|250px]]
|[[File:AirResistanceCar.png|center|300px]]
|-
| style="height:20px; width:300px; text-align:center;" |As the bowling ball moves through the [[air]] the '''air resistance''' slows it down.
| style="height:20px; width:300px; text-align:center;" |A car engine must provide a constant [[force]] to stay at the same speed because the '''air resistance''' would cause it to slow down.
|-
|[[File:AirResistanceTennisBall.png|center|150px]]
|[[File:AirResistancePlane.png|center|300px]]
|-
| style="height:20px; width:300px; text-align:center;" |On Earth the '''air resistance''' causes a tennis ball to have a [[Terminal Velocity|terminal velocity]] as it falls but on [[The Moon]] there would be no '''air resistance''' because there is no [[air]].
| style="height:20px; width:300px; text-align:center;" |If the plane engine cuts out the '''air resistance''' will cause it to [[decelerate]].
|}
==Key Stage 4==
===Meaning===
[[Air Resistance]] is a [[force]] which acts to [[decelerate]] [[object]]s that are moving through the [[air]].
===About Air Resistance===
: '''Air resistance''' is a [[force]] so it is [[Measure|measured]] in [[Newton]]s.
: '''Air resistance''' is a [[Contact Force|contact force]] because it can only exist when an [[object]] is moving in the [[air]].
: '''Air resistance''' increases with [[speed]]. The faster you travel the greater the '''air resistance'''.
: '''Air resistance''' depends on the [[Surface Area|surface area]] facing the direction of motion. The bigger the [[Surface Area|surface area]], the larger the '''air resistance'''
: '''Air resistance''' exists because [[object]]s moving through the [[air]] [[collide]] with [[atom]]s and [[molecule]]s in the [[air]] passing on some of its [[momentum]] which causes the [[object]] to lose [[momentum]] and therefore slow down.
===Examples===
| style="height:20px; width:300px; text-align:center;" |If the plane engine cuts out the '''air resistance''' will cause it to [[decelerate]].
|}
===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Air resistance, page 147, GCSE Physics; Third Edition, Oxford University Press, AQA']
:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe09663 ''Air resistance, page 211, GCSE Combined Science; The Revision Guide, CGP, AQA']
:[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac10 ''Air resistance, page 63, GCSE Physics; The Revision Guide, CGP, AQA']
:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Air resistance, pages 140-2, 146, 154, 158, GCSE Physics; Student Book, Collins, AQA']
:[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Air resistance, pages 159-161, GCSE Combined Science Trilogy; Physics, CGP, AQA']
:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Air resistance, pages 20, 121, GCSE Physics, Hodder, AQA']
:[https://www.amazon.co.uk/gp/product/1471851362/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851362&linkCode=as2&tag=nrjc-21&linkId=7d78d70a2044ee9982dae010c94af92a ''Air resistance, pages 209, 234-5, GCSE Combined Science Trilogy 2, Hodder, AQA']
:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Air resistance, pages 39, 190-192, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA']
:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Air resistance; and falling objects, pages 156-7, GCSE Physics, Hodder, AQA']