If the initial and final velocities of an object are equal, it means that there is no change in velocity over a given time interval. In such a case, the object is said to be moving at a constant velocity. When an object moves at a constant velocity, its acceleration is zero.
Acceleration is defined as the rate of change of velocity with respect to time. If the velocity remains constant, there is no change in velocity, and therefore the acceleration is zero.
So, when the initial and final velocities are equal, it implies that there is no acceleration acting on the object during that time interval.