Energy Skate Park Location: https://phet.colorado.edu/en/simulation/energy-skate-park Part A: Intro 1. Go to the simulation at the URL above. It will give you a choice of 4 sections to click on (Intro, Measure, Graphs, and Playground). Start by clicking on Intro. 2. Click and drag on the skateboarder to move her to the top of the track. Let go, and observe her go back and forth. 3. Try out the slow-motion feature. Click on Slow next to the play/pause button at the bottom. You can answer any of the following questions at full or slow speed. 4. Try out the step feature. Pause the simulation and hit the step button to the right of the pause/play button to step forward one frame of animation at a time. 5. On the right side, you will see that Friction is set to “None.” Keep it that way for now... 6. What do you notice about the maximum height that the skater reaches on the left side compared to the maximum height on the right side? (Note: if you look in the bottom left of the simulation, you can turn on a Grid that will help to answer this, or you can use the tape measure found in the bottom right corner.) 7. In the top right, turn on Pie Chart. A Pie Chart displaying a visual of the different form of energy in the skater-track-earth system will now follow your skater around. a) At what point or points in the skater’s motion is kinetic energy at a maximum? b) At what point or points in the skater’s motion is potential energy at a maximum? Name ________________________ Date ____________ Period _______ 2 8. Turn on Speed. A Speedometer will now appear. a) When the skater reaches the uppermost position(s), what is the speed value? b) Multiple Choice: At what point is the speed at a maximum? A. Just before the skater reaches the very bottom B. At the exact bottom C. A little bit after reaching the bottom