Engage by using your knowledge of physics in your everyday life: Think about things that go up and down when you play. For example, you might throw a ball in the air, ride a skateboard, or a swing at the playground. Look at this skater going down a frictionless track and use your experiences to make a table like Table 1. Energy Energy Kinetic Speed Potential Thermal Total Kinetic Potential Thermal Table 1 Prediction Describe your thinking Will the speed increase, decrease, or stay the same 2 Will the kinetic energy increase, decrease, or stay the same 3 Will the potential energy increase, decrease, or stay the same 4 Will the thermal energy increase, decrease, or stay the same