Velocity is a change in an object's motion OR direction of motion.
The change in an objects position is called motion.
Acceleration
Balanced forces do not change an object's motion.
Objects in motion continuously change position.To change direction, a force needs to act upon them.
uniform motion
it usually does, but if the force is balanced, it will not change the object's motion
That is the definition of motion
a pulley
a pulley
No.
The property of objects that resists changes in motion is called inertia.