How do you build a catapult which will fire a racquetball 7 meters?

To build a catapult that can fire a Racquetball 7 meters, you can use a sturdy base, a lever arm, and a launching mechanism. Construct a triangular base for stability, attach a long lever arm to a pivot point, and use a strong elastic material (like a bungee cord) to provide the launching force. Position the racquetball in a cup at the end of the lever arm, pull it back to store energy, and release it to launch the ball. Adjust the angle of the arm and the tension in the elastic to optimize the distance.