When no outside forces act on a system of objects, they follow the principles of Newton's First Law of Motion, also known as the Law of Inertia. Here's what happens:

* Objects at Rest Remain at Rest: If the objects are initially stationary, they will continue to stay stationary.

* Objects in Motion Stay in Motion: If the objects are moving, they will continue to move at the same speed and in the same direction.

In simpler terms:

* Objects like to keep doing what they're already doing. If they're still, they'll stay still. If they're moving, they'll keep moving in a straight line at the same speed.

Important Notes:

* "No outside forces" is a key condition. This means no friction, gravity, air resistance, or any other force from outside the system.

* "System of objects" refers to a group of objects that are considered together. Their interactions within the system are important, but the focus is on how the system as a whole behaves.

Examples:

* A hockey puck on a frictionless surface: If the puck is at rest, it will stay at rest. If it's moving, it will continue moving in a straight line at a constant speed.

* A spacecraft in deep space: With very little gravitational pull from nearby objects, a spacecraft will continue to move at a constant speed and direction unless acted upon by an outside force (like firing its engines).

Let me know if you have more questions!