Using phet lab

Investigating Conservation of Mechanical Energy with PhET Links to all simulations are on the class blog. For this activity, we will always assume there is no friction. https://phet.colorado.edu/sims/html/energy-skate-park-basics/latest/energy-skate-park-basics en.html PhET Skateboarder Settings: Intro . Mass set to Large . Bar Graph checked Use the U-shaped ramp Directions: . Drag the skateboarder to the top of the ramp and release to watch her go Observe her movement and the energy graph. Pay particular attention to the changes in kinetic and potential energy and the motion of the skateboarder Observation Questions: 1. At which position(s) on the ramp is the kinetic energy maximum? 2. At which position(s) on the ramp is the potential energy maximum? 3. How is the skateboarder moving when potential energy is decreasing? What is happening to her speed? 4. How is the skateboarder moving when potential energy is increasing? What is happening to her speed? 5. At which position(s) is the speed maximum? At which position(s) is the speed minimum? 6. What happens to kinetic energy as potential energy increases? As potential energy decreases? 7. Does the total energy (kinetic + potential) ever change