Recently in gym we started the badminton unit. I have no care for the game in particular, however, I realized that physics has an important part in the game. For instance, when you hit the birdie, it is a perfect example of projectile motion. How hard you hit it determines the initial horizontal velocity of the birdie. That and the angle you hit it at decides how far horizontally it will go. And when you hit the birdie, it is important to remember that the gravitational acceleration is 9.81 m/s^2, which helps determine many things, such as the maximum height.