Which of the following is not a vector?

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(D) vector quantity is a physical quantity that has both magnitude and direction.Displacement,velocity,and acceleration are all vector quantities beca

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speed

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(D) vector quantity is a physical quantity that has both magnitude and direction.Displacement,velocity,and acceleration are all vector quantities because they require both magnitude and direction to be fully described.Speed is a scalar quantity because it only represents the magnitude of the rate of change of position (distance per unit time) and does not have a specific direction associated with it.Therefore,speed is not a vector.

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