In this photo we see an example of centripetal force acting on race cars as they enter a banked turn at a high rate of speed. Centripetal force is the net force that acts on an object which keeps it moving in a circular path. Newton's 1st law tells us that an object will continue moving in a straight line until acted upon by outside force. The outside force that causes the object, in this case a race car, to move in a circular path is centripetal force. The direction of centripital force is always toward the cener of the curvature. In order for there to be a centripetal force, there has to be friction. So, as a car turns, the fricton acting on the turned wheels provides the centripetal force which allows the car to turn. However, with a banked turn, because of the angle of the bank, less friction is needed. The normal force on a banked turn is in the angle of the bank and not directly upward like it is on a flat surface. So when a car is on a banked turn, normal force is pushing it up at the degree of the bank, not directly up straight. This, along with centripetal force allows the car to take the turn at a higher rate of speed because less friction is needed. In the picture from Dover International Speedway the banking is 24 degrees in the turns and only 9 degrees on the straight parts of the track. The banking allows the cars to carry more speed into the turns without loosing control and crashing.

In this photo we see an example of converging mirror through a spoon. The image that is reflected on the spoon is inverted because of how the spoon is bent. The curvature of the spoon causes the light to be reflected at different angles and in this case, to reflect the image upside down. This photo shows a picture of a smiley face being held upright and being reflected upside down as a result of the curve of the spoon.