If there were no friction, a moving object would continue moving indefinitely at the same speed and in the same direction. This is because of Newton's First Law of Motion, also known as the Law of Inertia.

Here's why:

* Friction is a force that opposes motion. It's what causes objects to slow down and eventually stop when they're moving. Think about pushing a box across a floor - friction between the box and the floor slows it down.

* In the absence of friction, there's nothing to slow the object down. If there's no force acting to stop the object, it will continue moving at a constant velocity.

Example:

Imagine a spaceship in outer space, where there's virtually no friction. If the spaceship starts moving, it will keep moving at the same speed and in the same direction forever, unless acted upon by an external force.

So, in a frictionless environment, objects would move perpetually, never slowing down.