To calculate the final velocity of an object given its initial velocity and the time it has been moving, you can use the equation for constant acceleration:
Final velocity (v) = Initial velocity (u) + (Acceleration (a) × Time (t))
However, if the object is moving with a constant velocity (zero acceleration), the final velocity will be equal to the initial velocity since there is no change in speed.
It's important to note that this equation assumes that the acceleration remains constant throughout the motion. If the acceleration is not constant, you would need additional information or equations to calculate the final velocity accurately.