Jisho

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Noun
1. speed; velocity; quickness; rapidityesp. 速さ
2. earlinessesp. 早さ
Wikipedia definition
3. SpeedIn kinematics, the speed of an object is the magnitude of its velocity (the rate of change of its position); it is thus a scalar quantity. The average speed of an object in an interval of time is the distance traveled by the object divided by the duration of the interval; the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero .
Read “Speed” on English Wikipedia
Read “速さ” on Japanese Wikipedia
Read “Speed” on DBpedia
Other forms
早さ 【はやさ】

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