Analyze - is it possible for an object that has a constant negative acceleration to change the direction in which it is moving? Explain why or why not.

Yes. because if there is a direction taken positive and the object is accelerating negatively it can bounce of a wall and change its direction so through an obstruction can it do that

If the object is initially moving with constant positive velocity, then a constant negative acceleration will firstly act to slow it down. One it the object is brought to rest, it will change direction under the constant negative acceleration, and move in the opposite direction with ever increasing speed/velocity.