We have learned that a force is required to change the motion of an object.
Springs provide a particularly fun way to study changes in motion.
The popular Slinky toy is basically a spring, and offers a good example of a combination of motions that will be useful in probing several fundamental science concepts. Here you will study different types of springs, and investigate the relation between force, mass and the acceleration due to the Earth s gravity. These two basic types of springs are called extension and compression springs. Classification is basic to doing science. Frequently we study a large variety of objects, and by sorting and grouping the objects, we can explore patterns and relationships among the subgroups.