what is speed classified as a scalar quantity and velocity classified as a vector quantity?
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Expert's answer
2013-02-26T10:55:30-0500
Vectors have speed AND direction. Speed is classified as a scalar quantity because it only has magnitude (numerical value and unit of measurement) such as 50 mi/h. Velocity is classified as a vector quantity because it has magnitude and direction, 50 mi/h north. By including direction, you are giving more information than a scalar quantity (requiring one unit). It's just the way we define it.
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