2. Below is a snapshot from a simulation showing a skateboarder (a girl) ready to slide down a track. She starts at rest in the upper left (as shown) and begins to move along the track. Points I and III on the track are at the same height, and point IV is much higher than the starting point. Assume there is a negligible amount of friction, so neither the skateboarder nor the track warms up. Which one of the following statements would be accurate in this situation