why is speed classified as a scalar quantity and velocity classified as a vector quantity?

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21-10-2016
Physics

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why is speed classified as a scalar quantity and velocity classified as a vector quantity?

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Blanablas Blanablas · Answer 1 · 2016-10-21T12:34:53+02:00

Blanablas Blanablas

21-10-2016

Scalars have just magnitude, but vectors have magnitude /and/ direction. This is why speed, a magnitude describing how fast something is, is not a scalar quantity; but velocity, which is speed and a direction, is.

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zexius zexius · Answer 2 · 2016-10-21T12:35:02+02:00

zexius zexius

21-10-2016

Speed is classified as a scalar quantity and does not describe the direction.

Velocity is classified as a vector quantity as it describes both magnitude and direction.

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