Difference between revisions of "Speed"

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==Speed Distance Time Video==
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https://youtu.be/rQUwNC0gqdg?t=2557
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==Definition==
 
==Definition==
  
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On the other hand, '''velocity''' depends on a distance (called displacement) and ''''direction'''. If A walks around the block (4 equal sides), she may have walked 4 units of length in 4 minutes; giving her a speed of 1 unit of length per minute. However she has a distance from point of origin (called displacement) of 0 units of length; therefore her velocity is 0 units of length per minute in the opposite path direction to which she arrived back at the point of origin.  
 
On the other hand, '''velocity''' depends on a distance (called displacement) and ''''direction'''. If A walks around the block (4 equal sides), she may have walked 4 units of length in 4 minutes; giving her a speed of 1 unit of length per minute. However she has a distance from point of origin (called displacement) of 0 units of length; therefore her velocity is 0 units of length per minute in the opposite path direction to which she arrived back at the point of origin.  
  
See Also:
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==See Also:==
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*[[Distance]]
  
[[distance]]
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{{stub}}

Latest revision as of 11:29, 24 November 2024

Speed Distance Time Video

https://youtu.be/rQUwNC0gqdg?t=2557

Definition

Speed is the scalar quantity of change in distance travelled along a path, divided by the time it takes to travel that part of the path.

Contrast with velocity

Speed is different from velocity, the latter has direction. Here's why that changes things:

A\\\rule{0.513\textwidth}{1pt}\\[-1.5pt]\ignorespaces\rule{1pt}{1cm}\rule{1cm}{1pt}\rule{1pt}{1cm}\rule{1cm}{1pt}\rule{1pt}{1cm}\rule{1cm}{1pt}\rule{1pt}{1cm}\rule{1cm}{1pt}\rule{1pt}{1cm}\rule{1cm}{1pt}\rule{1pt}{1cm}\\\rule{0.513\textwidth}{0pt}B

Say $A$ wanted to get to $B$, if $A$ can only travel the paths drawn, $A$ would have to go 6 units of length (be they metres,kilometres, miles, yards,etc.). If they take 6 minutes then they averaged 1 unit of length per minute, this is their average speed (usually taken to just be speed).

On the other hand, velocity depends on a distance (called displacement) and 'direction. If A walks around the block (4 equal sides), she may have walked 4 units of length in 4 minutes; giving her a speed of 1 unit of length per minute. However she has a distance from point of origin (called displacement) of 0 units of length; therefore her velocity is 0 units of length per minute in the opposite path direction to which she arrived back at the point of origin.

See Also:

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