Definition: Force

Force is a vector quantity that results from an interaction that changes the motion of an object. It can cause an object to start moving, stop, or change its direction or shape. It’s measured in newtons (N) in the International System of Units (SI) and is commonly represented by the formula F=ma, where F is force, m is mass, and a is acceleration—basically, it’s how much oomph you need to get something moving! Did you know that the concept of force dates back to Newton? Sir Isaac Newton laid down the foundations of classical mechanics in the 17th century with his famous laws of motion. His second law, which relates force to mass and acceleration, not only revolutionized physics but also paved the way for modern engineering. It's fun to think that every push and pull in our world—whether you're opening a door, playing sports, or launching rockets—is based on Newton's insights!