It opposes motion, meaning if something is sliding on the floor, friction is the force that makes it eventually come to a stop. In a world without friction, the object would continue to slide forever, if not acted on by another force.

Is life possible without friction?

A world without friction would be unlivable. ... The reason why friction is so important to our world, is because it affects everything that's in motion. When any object is moving, slipping or sliding in one direction, friction is acting in the opposite direction. So, for example, consider something as simple as walking.

What would happen without friction?

Explanation: Friction stops things from sliding apart. If there was no friction everything would slide to the lowest point. It would be impossible to climb up anything.