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===Equation===
Where:
: s = [[Speed]]
|-
| style="height:20px; width:300px; text-align:left;" |
distance = 300[[m]]300m
time = 120[[s]]120s
<math>Speed = {\frac{distance}{time}} </math>
<math>Speed = 2.5m/s </math>
| style="height:20px; width:300px; text-align:left;" |
distance = 500[[m]]500m
time = 10[[s]]10s
<math>Speed = {\frac{distance}{time}} </math>
{| class="wikitable"
| style="height:20px; width:300px; text-align:center;" |'''A [[horse]] takes 20 [[minute]]s to trot 2.4 [[kilometre]]s. Calculate the speed of the [[horse]] in [[Metres per second|metres per second]].'''| style="height:20px; width:300px; text-align:center;" |'''The International Space Station takes 92 90 [[minute]]s to orbit the Earth once travelling 4240,000 [[kilometre]]s. Calculate the speed of the ISS.'''
|-
| style="height:20px; width:300px; text-align:left;" |
distance = 2.4[[km]] 4km = 2400[[m]]2400m
time = 20[[min]] = 1200[[s]]1200s
<math>Speed = {\frac{distance}{time}} </math>
<math>Speed = 2m/s </math>
| style="height:20px; width:300px; text-align:left;" |
distance = 4240,000[[km]] 000km = 4240,000,000[[m]]000m
time = 2090[[min]] = 5400[[s]]5400s
<math>Speed = {\frac{distance}{time}} </math>
<math>Speed = {\frac{4200000040000000}{5400}} </math>
<math>Speed = 76087407.7m/s </math> <math>Speed \approx 7600m407m/s </math>
|}
: Other [[unit]]s of [[speed]] can be given by the [[unit]]s of [[distance]] used and the [[unit]]s of [[time]] used in the calculation of [[speed]]. If [[centimetre]]s and [[minute]]s are used then the [[unit]]s of [[speed]] would be centimetres per minute.
: [[Speed]] can be found by [[measuring]] the [[distance]] travelled by an [[object]] in a given [[time]].
===Typical Speeds===
You should remember the following [[speed]]s for everyday events:
{| class="wikitable"
|-
| style="height:20px; width:200px; text-align:center;" |'''Motion'''
| style="height:20px; width:200px; text-align:center;" |'''Speed in m/s'''
|-
| style="height:20px; width:200px; text-align:center;" |Average Walking Speed
| style="height:20px; width:200px; text-align:center;" |1.5m/s
|-
| style="height:20px; width:200px; text-align:center;" |Average Running Speed
| style="height:20px; width:200px; text-align:center;" |5m/s
|-
| style="height:20px; width:200px; text-align:center;" |Average Cycling Speed
| style="height:20px; width:200px; text-align:center;" |10m/s
|-
| style="height:20px; width:200px; text-align:center;" |Car on the Motorway
| style="height:20px; width:200px; text-align:center;" |30m/s
|-
| style="height:20px; width:200px; text-align:center;" |Propeller Plane Flying
| style="height:20px; width:200px; text-align:center;" |100m/s
|-
| style="height:20px; width:200px; text-align:center;" |Jet Plane Flying
| style="height:20px; width:200px; text-align:center;" |250m/s
|-
| style="height:20px; width:200px; text-align:center;" |Speed of Sound in Air
| style="height:20px; width:200px; text-align:center;" |340m/s
|-
| style="height:20px; width:200px; text-align:center;" |Speed of Light in a Vacuum
| style="height:20px; width:200px; text-align:center;" |300,000,000m/s
|}
===Equation===
Where:
: s = [[Speed]]
time = 120s
| style="height:20px; width:200px; text-align:left;" |'''1. State the known quantities'''
time = 14s
|-
| style="height:20px; width:200px; text-align:left;" |'''2. [[Substitute (Maths)|Substitute]] the numbers into the [[equation]] and [[Solve (Maths)|solve]].'''
{| class="wikitable"
| style="height:20px; width:300px; text-align:center;" |'''A [[horse]] takes 20 28 [[minute]]s to trot 23.4 6 [[kilometre]]s. Calculate the speed of the [[horse]] in [[Metres per second|metres per second]].'''
| style="height:20px; width:300px; text-align:center;" |'''The International Space Station takes 92 [[minute]]s to orbit the Earth once travelling 42,000 [[kilometre]]s. Calculate the speed of the ISS.'''
|-
| style="height:20px; width:300px; text-align:left;" |
distance = 23.46km = 3600m time = 28[[kmmin]] = 2400[[m]]1680s
<math>s = \frac{distance}{time = 20[[min]] = 1200[[s]]}</math>
<math>Speed s = {\frac{distance3600}{time}1680} </math>
<math>Speed s = {\frac{2400}{1200}} 2.142857m/s </math>
<math>Speed = 2ms \approx 2.1m/s </math>
| style="height:20px; width:300px; text-align:left;" |
distance = 42,000[[km]] 000km = 42,000,000[[m]]000m
time = 20[[min]] 92min = 5400[[s]]5520s
<math>Speed s = {\frac{distance}{time}} </math>
<math>Speed s = {\frac{42000000}{5400}5520} </math>
<math>Speed s = 7608.7m/s </math>
<math>Speed s \approx 7600m/s </math>
|}
===References===
====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 ''Speed, page 117, GCSE Physics, Hodder, 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 ''Speed, pages 127, 147-149, GCSE Combined Science Trilogy; Physics, CGP, 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 ''Speed, pages 134-141, 144-149, GCSE Physics; Third Edition, Oxford University Press, 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 ''Speed, pages 140-1, 143-5, GCSE Physics; Student Book, Collins, 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 ''Speed, pages 147, 178-180, GCSE Physics; The Complete 9-1 Course for AQA, CGP, 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 ''Speed, pages 207, 225, GCSE Combined Science Trilogy 2, Hodder, 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=ad276ad49df77ab4b40ab4fd0fe10299 ''Speed, pages 208, 210, 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=f0dfb66dafcb0c6e9449e7b1a4ae1ac421 ''Speed, pages 60-63, GCSE Physics; The Revision Guide, CGP, AQA '']
====Edexcel====
:[https://www.amazon.co.uk/gp/product/1782945733/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945733&linkCode=as2&tag=nrjc-21&linkId=2a2dbec9db6bf5766c0458d908fa0a52 ''Speed, pages 12, 14, 15, GCSE Physics; The Revision Guide, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782945741/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945741&linkCode=as2&tag=nrjc-21&linkId=30da4f2178da182547b62a7329d13b57 ''Speed, pages 145, 147, 148, GCSE Combined Science; The Revision Guide, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Speed, pages 2, 12, GCSE Physics, Pearson Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Speed, pages 22-24, GCSE Physics, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Speed; distance/time graphs, pages 27, 28, GCSE Physics, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Speed; everyday speeds, page 23, GCSE Physics, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Speed; measuring, page 41, GCSE Physics, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Speed; of EM radiation, pages 127, 129, GCSE Physics, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Speed; of sound in air, page 95, GCSE Physics, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Speed; of water waves, page 96, GCSE Physics, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Speed; of waves in a solid, page 97, GCSE Physics, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Speed; orbits, pages 185, 186, GCSE Physics, CGP, Edexcel '']
:[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Speed; wave speed, pages 93, 94, GCSE Physics, CGP, Edexcel '']
====OCR====
:[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Speed, pages 157, 159-162, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR '']
:[https://www.amazon.co.uk/gp/product/1782945687/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945687&linkCode=as2&tag=nrjc-21&linkId=9a598e52189317a20311d7a632747bc9 ''Speed, pages 21-24, 89-91, Gateway GCSE Physics; The Revision Guide, CGP, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''Speed; And acceleration, pages 51, 53, Gateway GCSE Physics, Oxford, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''Speed; And velocity, pages 50, Gateway GCSE Physics, Oxford, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''Speed; Calculation, pages 49, 195, 216-217, Gateway GCSE Physics, Oxford, OCR '']
:[https://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''Speed; Speed-time graphs, pages 56, Gateway GCSE Physics, Oxford, OCR '']