FORMATIVE ASSESSMENT 4.1 Changes in Motion REVIEWING MAIN IDEAS INTERPRETING GRAPHICS 1. List three examples of each of 6. Study the force diagram shown. the following: Redraw the diagram, and label each a. a force causing an object to vector arrow with a description of the start moving force. In each description, include the b. a force causing an object to object exerting the force and the stop moving object on which the force is acting. c. a force causing an object to change its direction of motion 2. Give two examples of field forces described in this section and two examples of contact forces you observe in everyday life. Explain why you think that these are forces. 3. What is the SI unit of force? What is this unit equivalent to in terms of fundamental units? 4. Why is force a vector quantity? 5. Draw a free-body diagram of a football being kicked. Assume that the only forces acting on the ball are the force due to gravity and the force exerted by the kicker