Newton's Second Law

Newton's Second Law

 Newton's second law is one of the most important laws in physics. With this simple formula almost everything related to motion in our known world can be done. Everything from children's marble games to rockets into space can be explained with this formula. You already know how small the atom is, and you also know how fast the speed of light is, in these two cases - that is, in the case of very small lengths comparable to the size of atoms or very large speeds comparable to the speed of light, Newton's law does not work. The first case requires quantum theory, and the second case requires relativity theory, you will learn about both in the next chapter. Since we do not even come close to it in our daily life, we cannot feel their need separately. Newton's second law applies perfectly to almost everything in the visible world around us. Newton's second law is:

Newton's Second Law: The rate of change of momentum of an object is proportional to the force acting on it, and in the direction in which the force acts, the change in momentum is also in the direction.