If an object starts with a negative acceleration and a positive initial velocity, the final velocity of the object will depend on the magnitude of the acceleration and the time for which the acceleration is applied.
Let's assume the initial velocity is denoted by "v₀" (positive value) and the acceleration is denoted by "a" (negative value). If the object experiences constant acceleration, we can use the following equation:
v = v₀ + at
where "v" is the final velocity, "t" is the time for which the acceleration is applied, and "a" is the negative acceleration.
If the time "t" is positive, the negative acceleration will act against the initial velocity and eventually decrease it until the final velocity becomes negative. However, if the time "t" is zero or negative, the object will maintain its positive initial velocity.
Therefore, without knowing the specific values of the initial velocity, acceleration, and time, we cannot determine the final velocity. The final velocity could be positive, negative, or zero depending on the magnitudes and directions of the initial velocity and acceleration, as well as the duration of the acceleration.