How are the variables speed and velocity different? how are they similar

Speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. ... Velocity is the rate at which the position changes. The average velocity is the displacement or position change (a vector quantity) per time ratio.

Explanation:

answer; (d) spontaneous processes are characterized by the overall conversion of order to disorder;

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