Speed

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Speed is the distance that an object moves in a given amount of time. Speed is a measure of how fast something is moving. The average speed of an object in a certain time is the distance the object travelled divided by the time.

Finding speed

To find speed ,

where is the distance and is the time that has gone by.

Units of measurement for speed

There are many units of measurement for speed. For example, an object's speed can be measured in

Changing speed

When an object changes speed, it gets faster or slower. If the speed of the object increases, it is called acceleration. If the object gets slower, and the speed decreases, it is called deceleration, or negative acceleration.


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