Today, we will talk about friction. Friction is when a object rubs up against another object. Rubbing my hands together makes friction.
The wheels on this bus against the road creates friction.
This guys shoes against the floor is friction.
Friction is very important. Without friction, we would keep going forward no matter what. That is were Newton's first law of motion comes into play.
Newton's first law states that anything not in motion will stay not moving and anything in motion will stay in motion unless a force acts upon it. This ball is moving and will not stop unless a force acts upon it
well...good bye then. See you later. Come back again!
The lamp post was the force to make the ball stop. Not just that but the side walk was a form of friction on the ball. The side walk slowed the ball down a bit before the ball ran into the lamp post.