The change of position per unit time is referred to as what?

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The term that describes the change of position per unit time is velocity. Velocity is a vector quantity, which means it has both magnitude and direction. It measures how quickly something is moving and in what direction. For example, if a car travels 60 kilometers to the east in one hour, its velocity is 60 km/h to the east.

Understanding velocity is crucial in refrigeration systems because the movement of refrigerants and the design of equipment rely on knowing how quickly these substances flow through various components. This flow affects the efficiency and effectiveness of the refrigeration cycle.

Acceleration, on the other hand, refers to the rate of change of velocity over time, while momentum relates to the quantity of motion an object has, which is dependent on its mass and velocity. Displacement indicates the overall change in position from a starting point to an endpoint, focusing on the distance and direction between these two points rather than the rate of change.

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