> wiki   Explore:images videos games  


KidzSearch Safe Wikipedia for Kids.
Jump to: navigation, search

Speed is the distance that an object moves in a certain 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 traveled divided by the time. Speed is a scalar.

Finding speed

To find speed [math]s[/math],

[math]s =[/math][math] d \over t[/math]

where [math]d[/math] is the distance and [math]t[/math] 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.

Related pages

Other websites

Quotations related to Speed at Wikiquote