Velocity is a vector quantity and is the rate of change of position of an object moving in a direction to another point from the initial or the reference point.
Velocity is the estimation of the changed position of an object from its initial to another point concerning time. For a velocity to occur change in the position and movement of the object at another place is necessary.
The displaced place and distance affects the rate of velocity and is related to the direction and speed of the object. It is measured as the proportion of the speed over time taken.
Therefore, option A. rate at which the object moves away from the reference point is correct.
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