What is friction?
Friction is a pressure that opposes the motion of an item with the aid of using appearing on it in the contrary direction. The pressure of friction comes into impact while surfaces are in contact, and pressure is carried out to make one or each of the surfaces move. Suppose you roll a ball at the ground. The ball will come to a halt after traveling a sure distance, even supposing it has hit not anything or nobody has stopped it. The ball stops due to the fact the friction exerted through the ground acts in opposition to the motion of the ball. The soles of your new footwear likely have cuts in them to make an choppy surface.When you run, the choppy surfaces of the footwear and the street rub towards every other. This friction makes positive you do now no longer slip while you're running. Lack of friction additionally causes us to slide on a moist ground because the water makes the ground smooth, this means that friction is reduced. Friction produces heat. That is why while you rub a matchstick in opposition to a matchbox, sparks fly.
