Category Puzzle

You are a poor teddy bear (with a jetpack!) who is being chased by a jet fighter! You can only orbit in a circle and the jet fighter is trying to hit you. You have to change your direction from time to time to avoid hitting the jet fighter. At first, both of you move slowly, so it is easy. But as you progress, their speed will increase and it becomes much more difficult to avoid the jet and you have to be very quick in changing your moving direction.