Using dynamics cart demonstration, the definition of a force will be discovered. The description of forces by direction and strength is listed. The direction and strength can be shown by using a vector to indicate direction, and the size of the vector to illustrate strength. Diagrams will be used to reinforce these descriptions. The main types of forces will be discussed, contact forces and forces at a distance. An applied force, normal force, and friction force will be defined as contact forces. Electrical, magnetic and gravitational forces defined as distance forces. Each example will be explained, as well as factors which will affect each one.