Build Your Roller Coaster Use the simulation to build and test your own roller cooster design. 1. If you made any changes during the Exploration Questions, click "Reset" again. 2. Right-click the track and select "Roller Coaster Mode". This keeps the skater attached. 3. Notice that you can zoom out to give yourself a wider view. You may want to do this as you build your coaster. 4. Drag in new pieces of track to manipulate the curves. 5. Drag and drop the rider to the location of the beginning and observe. DO NOT MAKE CHANGES YET. a. The ride probably was not successful on the first attempt. If not, what physics concept(s) was violated? b. Identify several adjustments you need to make. 6. After making the initial adjustments, try the ride again. Continue making adjustments until the ride becomes successful (rider makes it from one end to the other completely - does not have to make it back through). 7. Draw a side-view sketch of your successful design below. 8. Label the points of acceleration on your sketch. a. Down arrow = slowing down b. Up arrow = speeding up c. Circle arrow \( = \) changing direction 9. Click the "Track Friction >" button and adjust the setting. 10. Run the rider through your track again and observe the changes. a. Did the rider make it to the end? b. What do you notice differently about the pie chart and/or bar graph? 11. Describe the changes you need to make to your design, as a result of the presence of friction. 12. Make the necessary adjustments until you achieve a successful ride with friction. 13. Draw a side-view sketch of your friction-savyy coaster below.

To successfully design a roller coaster using the simulation, let's break down the steps and address each part of the task systematically. ### Step 1: Initial Setup - **Reset the Simulation**: Ensure that any previous changes are cleared by clicking "Reset." - **Roller Coaster Mode**: Right-click the track and select "Roller Coaster Mode" to keep the skater attached. ### Step 2: Initial Observations - **Zoom Out**: Zoom out to get a better view of the entire track as you build. ### Step 3: Initial Ride Attempt - **Drag the Rider**: Place the rider at the starting point and observe the ride. #### a. Physics Concepts Violated - If the ride fails, consider the following physics concepts: - **Potential Energy**: The height of the initial drop must be sufficient to convert potential energy into kinetic energy. - **Kinetic Energy**: The speed of the rider must be enough to overcome friction and any inclines. - **Gravity**: The force of gravity must be sufficient to keep the rider on the track. #### b. Adjustments Needed - Increase the height of the initial drop. - Add more downward slopes to maintain speed. - Ensure that curves are not too sharp, which can cause loss of speed. ### Step 4: Making Adjustments - After making the initial adjustments, test the ride again. Continue to tweak the design until the rider successfully completes the course. ### Step 5: Sketching the Successful Design - **Draw a Side-View Sketch**: Create a sketch of your successful roller coaster design. - **Label Points of Acceleration**: - **Down Arrow**: Indicate where the rider is slowing down. - **Up Arrow**: Indicate where the rider is speeding up. - **Circle Arrow**: Indicate where the rider is changing direction. ### Step 6: Adjusting Track Friction - Click the "Track Friction >" button and adjust the friction settings. - Run the rider through the track again. #### a. Observations with Friction - **Did the Rider Make It to the End?**: Check if the rider completes the course with the new friction settings. #### b. Changes in Graphs - Observe any changes in the pie chart and/or bar graph that represent energy distribution and speed. ### Step 7: Adjustments Due to Friction - If the rider does not make it to the end, consider: - Increasing the initial height further. - Adding more downward slopes to counteract the energy lost to friction. - Reducing sharp turns to maintain speed. ### Step 8: Final Adjustments - Make the necessary adjustments to achieve a successful ride with friction. ### Step 9: Final Sketch - **Draw a Side-View Sketch of the Friction-Savvy Coaster**: Create a new sketch that incorporates the adjustments made for friction. ### Conclusion By following these steps, you can systematically design a roller coaster that successfully navigates the track while considering the effects of physics and friction. Each iteration of testing and adjusting will help you understand the dynamics involved in roller coaster design.