No, the distance of an object does not decrease when it moves with a constant velocity. When an object moves with a constant velocity, it means that its speed and direction remain unchanged over time. In this case, the distance traveled by the object continues to increase at a constant rate, or remains constant if the object is stationary.
Distance is a scalar quantity that refers to the total path length covered by an object. If the object is moving in a straight line, the distance can be calculated by multiplying the magnitude of its velocity by the time interval over which it traveled.
However, it's important to note that the displacement of an object can be zero or negative even when it moves with a constant velocity. Displacement is a vector quantity that refers to the change in position of an object, considering both magnitude and direction. If an object returns to its starting point or moves backward, its displacement may be zero or negative, respectively, even though its distance covered is positive.