The rate at which velocity changes can be defined as acceleration or average acceleration.
Explanation:
The acceleration is defined as the rate of change of velocity with respect to time. So, the change in velocity from the initial velocity at different time intervals will help to attain the acceleration attained by the object.
[tex]\ a =\frac{v_{f}-v_{i}}{\Delta t}[/tex]
where,
[tex]v_{f} \text { and } v_{i}[/tex] – final and initial velocities, [tex]\Delta t[/tex]– time
If the change in velocity is constant for same time interval, then the acceleration will be constant for that object. So, an object can attain uniform acceleration when the velocity changes uniformly with time.
