r'HSC 111 Introduction to Physical Science Energy Skate Park Use a virtual simulation to explore the physics of a simple skate park. Access the Energy Skate Park simulation at: mMphetcolorado.edufsimsfhtmlf'energyskate parkr'latest/cnergyskatc-park_en.html. Part 1: No Friction Click Intro. Set the following parameters: ' Friction = none ' Uncheck Stick to Track ' Click the plus sign next to Energy (to show energy graphs) ' Check Grid. Pie Chart and Speed Below is a screenshot of what your screen should look like. (Feel free to choose the type of skater, but the mass shoold stay at 60 kg.) Figure 1: Screenshot of Intro Simulation Take a few moments and play with the simulation. Notice that you can click and drag the skater to any point along the skate track. Use the simulation to answer the questions below. Questions: 1. On the visual aids ( graph and pie chart), which color represents potential energy and which represents kinetic energy? 2. The speedometer provides information about the skater's speed. At what point(s) during the run does the skater have the greatest speed? At what point(s) does the skater have the lowest speed? 3. The grid provides information about the skater's height. At what loeation(s) during the skater's ride is the skater at the highest point? At what location does she reach the lowest point? 4. Observe the locations where the skater has the highest and lowest amounts of kinetic energy Changes in the skater's kinetic energy directly correlate with changes in the skater's (speed / height) and indirectly correlate with the skater's (speed I height). 5. Observe the locations where the skater has the highest and lowest amounts of potential energy. Changes in the skater's potential energy directly correlate with changes in the skater's (speed / height) and indirectly correlate with the skatcr's (speed ! height). 5.. Describe how the bar graph changes as the skater moves along the track. 7. Describe how the pie chart changes as the skater moves along the track. it. What type of energy is NOT present in the skater's ride? 9. Click and drag the skater to a height of 4 meters (either side). a. How high does she get on the other side after one run? meters b. Let the simulation play until the skater is able to complete at least 10 back-and-forth runs. How high is she able to get new? meters in. Run the simulation using various different masses. How does increasing the skater's mass change the skater's. .. 3. Kinetic Energy? (decreases, stays the same, increases) b. Potential Energy? (decreases, stays the same, increases) c. Total Energy? (decreases, stays the same, increases) 11. Explain your reSponses to the previous question. (Hint: Consider the equations for kinetic energy and potential energy.) 12. How does the skater's kinetic energy change as she moves... 3. DOWN the ramp? b. UP the ramp? 13. Explain your responses to the previous question (i.e., WHY docs kinetic energy change in that way?) 14. How does the skaters potential energy change as he ITIOVES. .. a. DOW the ramp? b. UP the ramp? 15. Explain your responses to the previous question (i.e., WHY does potential energy change in that way?) Is. How does the skater's total energy change as he moves... a. DOWN the ramp? 1). UP the ramp? 1?. Explain your responses to the previous question (i.e., WHY does total energy Change in that way?) 18. Sketch where the skater might be based on the bar graphs in each situation. 1.9. Consider the track above (Points B and E are at the same height). What point(s) on this track would the skater have . .. a. the most kinetic energy? A B C D E a. the most potential energy? A B C D E c. both kinetic and potential energy? A B C D E d. the same kinetic energy? A B C D E e. the same total energy? A B C D E Part 2: Friction Reset the simulation. Set the same parameters as Part 1 EXCEPT this time keep friction at default (about half-way between None and Lots. Questions: 1. In addition to Potential, Kinetic, and Total there is another category of energy. What is it? 2. Click and drag the skater to a height of4 meters (either side). a. How high does she get on the other side after one run? meters b. Let the simulation play until the skater completes at least 10 back-and-forth runs. How high is she able to get now'? meters 3. What happens to each type of energy throughout the skater's ride when friction is considered? (Focus on general trends, such as what happens to the kinetic energy over time at the location where it is generally the greatest.) Provide an explanation. - Kinetic energy (increases f stays the same / decreases) because ' Potential energy (increases 3 stays the same / decreases) because ' Thermal energy (increases / stays the same / decreases) because - Total energy (increases 1' stays the same I decreases) because 4. Does the situation you just explored Violate the Law of Conservation of Energy? Explain why or why not