===Meaning===
[[File:sdtTriangle.png|right|300px|thumb|This equation triangle shows how to rearrange the equation to find speed, distance or time. To find speed cover over the s to find it is d/t. To find distance cover over the d to find it is s x t. To find time cover over t to find it is d/s.]]
:<math>Speed = {\tfracfrac{distance}{time}} </math> is an equation which can be used to calculate the [[speed]] of an [[object]] given the [[distance]] traveled and the [[time]] taken to travel that [[distance]].
===About Speed=Distance/Time===
: The standard scientific [[unit]]s for [[measuring]] '''speed''' are [[Metres per secondSecond|metres per second]] ([[m/s]]).
: The [[unit]]s of [[speed]] are given by the [[unit]]s of [[distance]] used and the [[unit]]s of [[time]] used in the calculation.
:<math>Speed = {\tfracfrac{distance}{time}} </math>:<math>Speed = {\tfracfrac{metres}{seconds}} </math>:<math>Speed = {\tfracfrac{m}{s}} </math>:<math>Speed = m/s </math>
===Example Calculations===
{| class="wikitable"
|-
| style="height:20px; width:300px; text-align:center;" |'''A person jogs 300[[metre]]s in 120 [[second]]s. Calculate the speed of the jogger.'''| style="height:20px; width:300px; text-align:center;" |'''A racing car travels 500[[metre]]s in 10 [[second]]s. Calculate the speed of the racing car.'''
|-
| style="height:20px; width:300px; text-align:left;" |
: distance = 300[[m]]300m : time = 120[[s]]120s :<math>Speed = {\tfrac{distance}{time}} </math>:<math>Speed = {\tfrac{300}{120}} </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 = {\tfrac{distance}{time}} </math>:<math>Speed = {\tfrac{500}{10}} </math>:<math>Speed = 50m/s </math>
|-
| 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 minutes [[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 = 2.4[[km]] 4km = 2400[[m]]2400m : time = 20[[min]] = 1200[[s]]1200s :<math>Speed = {\tfrac{distance}{time}} </math>:<math>Speed = {\tfrac{2400}{1200}} </math>:<math>Speed = 2m/s </math>
| style="height:20px; width:300px; text-align:left;" |
: distance = 42,000[[km]] 000km = 42,000,000[[m]]: time = 20[[min]] = 5400[[s]]:<math>Speed = {\tfrac{distance}{time}} </math>:<math>Speed = {\tfrac{42000000}{5400}} </math>:<math>Speed = 7608.7m/s </math>:<math>Speed \approx 7600m/s </math>|}000m
time = 20[[min]] = 5400s
A person jogs 300[[metre]]s in 120 [[second]]s. Calculate the speed of the jogger.: distance = 300[[m]]: time = 120[[s]]:<math>Speed = {\tfrac{distance}{time}} </math>:<math>Speed = {\tfrac{300}{120}} </math>:<math>Speed = 2.5m/s </math>
A racing car travels 500[[metre]]s in 10 [[second]]s. Calculate the speed of the racing car.: distance = 500[[m]]: time = 10[[s]]:<math>Speed = {\tfrac{distance}{time}} </math>:<math>Speed = {\tfrac{50042000000}{105400}} </math>:<math>Speed = 50m/s </math>
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]].: distance = 2.4[[km]] = 2400[[m]]: time = 20[[min]] = 1200[[s]]:<math>Speed = {\tfrac{distance}{time}} </math>:<math>Speed = {\tfrac{2400}{1200}} </math>:<math>Speed = 2m7608.7m/s </math>
The International Space Station takes 92 minutes to orbit the Earth once travelling 42,000 [[kilometre]]s. Calculate the speed of the ISS.: distance = 42,000[[km]] = 42,000,000[[m]]: time = 20[[min]] = 5400[[s]]:<math>Speed = {\tfrac{distance}{time}} </math>:<math>Speed = {\tfrac{42000000}{5400}} </math>:<math>Speed = 7608.7m/s </math>:<math>Speed \approx 7600m/s </math>|}