According to Wikipedia the definition of motion is:
In physics, motion is a change in position of an object with respect to time. Motion is typically described in terms of displacement, distance, velocity, acceleration, time and speed.
The definition of uniform motion is that the object is supposed to cover equal distances in equal intervals of time. This means that the object in motion will have constant velocity. But when we are talking about uniform motion, why is it defined only in the terms of velocity and not acceleration or displacement?
Best Answer
Well, it isn't defined from velocity. As you clearly write it here yourself. That is your own interpretation. You could just as well have said that "that means that the acceleration must be constant, so why do they define it from acceleration and not velocity?"
Uniform motion means all those things: Constant velocity, constant acceleration, constant displacements during each time interval etc.