This worksheet will help you organize your thoughts for the discussion. Write down some notes based on the questions and prompts below. 1. The law of conservation of energy states that the total energy of the cart at the top of the ramp must be the same as the total energy of the cart at the bottom of the ramp. Do your data reflect this law? Are there any sources of error that might need to be considered in your analysis? (5 points) 2. Why did you use the change in height (A) instead of the initial height (h) in your gravitational potential energy calculations? (5 points) 3. In reality, the kinetic energy at the bottom of the ramp will always be less than the gravitational potential energy at the top of the ramp. Does this disprove the law of conservation of energy? Where did the "lost" energy go? (5 points) 1. Describe at least one part of the experimental procedure that you thought was essential to getting good results. Did you find that certain steps in the procedure had to be followed carefully in order to get consistent results? If you wanted better results, do you think there is a step that could have been added to the procedure? 2. Discuss your thoughts on the overall lab design. Did it help you understand the concepts better, or did it raise more questions? Do you think you could have designed a better experiment? If so, explain how and then discuss it with your classmates. Share some of your knowledge with them or learn a little more about the experiment you just did.