Class Response (Friction)

There are many ways types of force. One type of force is called friction. Friction is when a force that acts in an opposite direction of the moving object causing it to stop and eventually come to a stop. For example, the brakes on a car. The wheel is moving forward while the brakes are applied and move opposite of the wheel (backwards). There are three types of friction. They are sliding friction, fluid friction, and rolling friction. Rolling friction has to do with anything that has rolling items like wheels on a car. Fluid friction has to do anything with any gas or liquid. Finally, sliding friction has to do anything sliding like pushing a box.

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Friction is not good and very useful in many ways. One useful way friction is used is the tires of your car. You need friction because the car can stop. Also, in the brakes. If the brakes are too smooth, the brakes would fail and you would get into an accident. A way that friction is not good is that when you ave a heavy box, and you need to slide, it will be harder to slide it because of the weight and the friction. Lastly what causes friction is because of the two different surfaces. Like tire on concrete or wood on wood.