If the velocity of an object changes with time, it indicates that the object is undergoing acceleration. However, whether the acceleration is uniform or non-uniform depends on how the velocity changes.
Uniform acceleration refers to a situation where the object's velocity changes by an equal amount in equal time intervals. In this case, the object's acceleration remains constant throughout.
Non-uniform acceleration, on the other hand, occurs when the object's velocity changes by varying amounts in equal time intervals. In this case, the object's acceleration is not constant and may vary at different moments.
To summarize:
- If the velocity of an object changes with time at a constant rate, the object is undergoing uniform acceleration.
- If the velocity of an object changes with time at varying rates, the object is undergoing non-uniform acceleration.
Therefore, the change in velocity over time indicates that acceleration is present, but whether it is uniform or non-uniform depends on how the velocity changes.