When serving the volleyball, many things are being observed that connect with physics in some way. While serving, be sure to hit the ball with the palm of your hand, making contact with the ball at its center (be sure to keep your wrist firm and locked). Make sure your contact is quick and under control. Average acceleration is defined as acceleration measured over a limited time interval and average velocity is velocity measured over a limited amount of time. When serving one must stand behind the end line, which is 30 feet from the net. The net measures 90 inches from the ground. The goal is to get the ball across the net with as little time as possible so that the other team has less time to react and handle the ball. Normal serving is done from the floor where the server has to create a parabolic motion path for the ball to travel so that it will clear the net and then land within the boundaries of the court. Jump serving is another serve that has came along since volleyball has become more of a vertical sport. The advantages that jump serving gives have to do with the physics of projectile motion. The angle in which the server’s initial velocity has to start from is smaller, because as the height increases the slope of the parabola in the motion of the ball decreases. As the height of contact increases the path that the ball follows becomes line like as it crosses the net and if the contact height is high enough and the ball is contacted correctly the ball will have a downward path similar to that of a triangle. These are all the things in which physics relates to serving.