If a force does not work on an object, the object will remain in its current state of motion. This is a direct consequence of Newton's First Law of Motion, also known as the Law of Inertia.

Here's what this means:

* If the object is at rest, it will stay at rest. Think of a book lying on a table. It won't start moving unless a force acts on it (like you picking it up).

* If the object is moving, it will continue moving at a constant speed in a straight line. Imagine a ball rolling across a frictionless surface. It will keep rolling forever in the same direction and at the same speed without any force acting on it.

Important Notes:

* Work is done when a force causes a displacement. So, even if a force is applied to an object, if it doesn't move (like pushing against a wall), no work is done.

* Friction is a force. It opposes motion, so it can act to slow down or stop an object.

* Real-world objects always experience some forces, even if they are very small (like air resistance). This is why objects eventually stop moving even if no obvious force is applied.

Let me know if you'd like more explanation on any of these concepts!