Answer:
It does not come to a complete stop immediately because of inertia.
Explanation:
Inertia is the reluctance of an object to change its state of motion or rest. In this case, it is the state of motion since the ship was moving initially. Inertia is directly related to mass. Thus, the heavier the mass, the larger the inertia. The ship has a large mass and therefore it has a large inertia. This causes the ship to slowly come to a stop instead of stopping immediately when the engines are switched off.
