Speed

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Speed is the distance that an object moves in a certain amount of time. Speed is a measure of how fast something is moving.

Speed is a scalar.

Contents

[edit] Finding speed

To find speed s,

s = d \over t

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

[edit] Units of measurement for speed

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

[edit] Changing speed

Increasing speed is called acceleration. Decreasing speed is called deceleration, or negative acceleration.

[edit] Other uses

  • Some people use the word "speed" to refer to amphetamine and methamphetamine, which are strong stimulant drugs.

[edit] See also