A center of percussion is a specific spot on an object that helps make sure it hits things properly without making too much vibration. It is like a special spot on something that helps make sure it hits the right way. For example, think of a baseball bat. If you hit a baseball with the center of percussion on a bat, the bat won't vibrate as much and the ball will go farther. It is like a special spot that helps the baseball move farther and makes the bat not vibrate so much.