This milestone will provide a basis for the development of the final project by describing, in words and calculations (using concepts from the class) what is going on in the selected stage of your device. If you have not begun the design, provide a description of a device that you have found (in this case, provide a reference). The discussions from the first two modules of the course can be incorporated into this document. This milestone represents Critical Element I and Parts A and D of Critical Element III. Your submission will describe quantitatively what is going on during the analyzed steps, and will calculate initial velocity, change in velocity, and force for the selected step.