Example: If Joshua is in a car that takes a sharp right turn, he will feel as though he is being pushed to his left. This is an imaginary force, called a centrifugal force, or a "running away from the center" force. Joshua feels it because he is inside the car and is affected by it. However, if Joshua's girlfriend, Andrea, is on the side of the road facing the front of Joshua's car and watches Joshua's car take a sharp right turn, Andrea will see the car push Joshua to the right with the car as it changes direction. This is a real force called centripetal force (or an "aiming towards the center" force) and acts towards the center of the circle of rotation.