If there are no forces acting upon an object, it will continue to do what it was already doing. This is encapsulated in Newton's First Law of Motion, also known as the Law of Inertia:

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Here's what this means in practice:

* Object at rest: If an object is sitting still, it will stay still forever unless something pushes or pulls it.

* Object in motion: If an object is moving, it will keep moving at the same speed and in the same direction forever unless something slows it down, speeds it up, or changes its direction.

Important Note: In reality, it's impossible to completely eliminate all forces acting on an object. There's always some level of friction, gravity, or air resistance present. However, the principle still holds true - the object will continue moving in its current state unless a significant force intervenes.