Constant acceleration.
Note that all orbits approximate this condition.
If the motion is truly in the form of a circle, the phrase uniform circular motion describes it appropriately. This means that the object is in a constant state of motion about a fixed point at a constant distance from that point. Circular motion can be considered an acceleration, because an acceleration describes any change in velocity or direction. Since circular motion involves constant change in direction, the object exhibits constant acceleration.
force applied to an object as a pulling motion towards a fixed or an object in equal motion with the object.
If its position relative to a fixed point is changing
motion
Rotation describes the motion of an object, in a circular manner, around a fixed center point.
In uniform motion, object travel at fixed and constant speed and uniformly accelerated motion the speed of the object increases uniformly.
If the motion is truly in the form of a circle, the phrase uniform circular motion describes it appropriately. This means that the object is in a constant state of motion about a fixed point at a constant distance from that point. Circular motion can be considered an acceleration, because an acceleration describes any change in velocity or direction. Since circular motion involves constant change in direction, the object exhibits constant acceleration.
It means that acceleration is constant. This meaning that velocity is varying with respect to time, we see this by this formula (v - v(initial) ) / t (Time).
relative motion
force applied to an object as a pulling motion towards a fixed or an object in equal motion with the object.
To-and-fro motion of an object about a fixed point is known as Oscillatory motion.
velocity
If its position relative to a fixed point is changing
motion
Rotation describes the motion of an object, in a circular manner, around a fixed center point.
I guess you cannot. Even if the object is firmly nailed down, it is in motion because the Earth is in motion - rotating about its axis and revolving around the sun. And then the sun is whizzing through space, in its path around the galactic centre, and the Milky Way Galaxy is moving towards the Andromeda cluster, and ...The only thing that you can do is to select a point of reference , which you consider a fixed point of reference and, if the location of the object with respect to that fixed point changes, then it is in motion.
It means, with respect to what is the motion calculated. There is no "absolute" motion, or velocity; you always have to compare an object to some other object, to decide whether it is moving, and how quickly.