Unit 1 The Task (f) List problems that you encountered during the cre- Choose one of the following: ation of the model coaster or toys, and explain how you solved them. Option 1: A Model Roller Coaster Your task is to apply physics principles to design, build, test, (g) Create your own analysis questions and answer them. modify, and analyze a model of a looping coaster that will Option 3 take a marble or a small ball bearing from the top of the (h) What are the physics principles applied to the design coaster to the bottom. Your design of this gravity ride will and use of centrifuges? depend on the dimensions and construction materials sug- gested by your teacher. Before starting the task, decide what (i) What are the principal uses of centrifuges, and who criteria can be used to evaluate the model, and whether there are the principal users? will be a model coaster competition. (j) How is the design of a centrifuge affected by its pur- pose? Option 2: Toys That Apply Physics Principles (k) How common and costly are centrifuges? Your task is to apply physics principles to design, build, test, (1) What impact have centrifuges had on individual users modify, and analyze two models of an original toy that involves and society at large? friction and/or air resistance. Look carefully at existing toys (m) What careers are related to the manufacture and use that require friction and/or air resistance to operate. After of centrifuges? observing what currently exists, think of an original toy. You should build two models of your design to demonstrate how (n) What research (including research related to space changing the friction or air resistance leads to a change in science) is being carried out to improve the design the toy's action. and use of centrifuges? (o) Create your own analysis questions and answer them. Option 3: Centrifuges Your task is to research the 2: Andages formed- Evaluation ical, forensic, and industrie bedding and Your evaluation will depend on the option you choose. training humans. As next ? pare the use of centrifuges a new. Earth- bound cen- Options 1 and 2 trifuges. You will use scientific concepts and principles to (p) How does your design compare with the designs of explain the operation and advantages of centrifuges. thet students or groups? (q) Draw a flow chart of the process you used in working Analysis on this task. How do the steps compare to the steps in Your analysis should include answers to the following a typical laboratory investigation in this unit? questions: (r) If you were to begin this task again, what would you modify to ensure a better process and a better final Options 1 and 2 product? (a) What are the physics principles applied to the design and/or use of the roller coaster model or the toys? Option 3 (b) What criteria can be used to evaluate the success of (s) Evaluate the resources you used in your research. your device? (t) If you were to embark on a similar task with a dif- (c) What safety precautions did you observe in con- ferent goal, what changes to the process would you structing and testing your device? make to ensure successful research and an appro- (d) How did you test your device to identify necessary priate means of communicating what you find? improvements? (e) How can the process you used in performing this task be applied in the real world? Forces and Motion: Dynamics 163 NEL