As shown in the figure below, a skateboarder starts at point A on the ramp and rises to point B, a maximum height of h = 3.09 m above the top of the ramp. If the amount of work done against friction is insignificant, determine his initial speed (in m/s) at point A. m/s Supporting Materials Physical Constants -1 points OSCOLPHYS1 7.P.051.WA. My Notes | Ask Your Teacher The specialty of an athlete on the women's track team is the pole vault. She has a mass of 52 kg and her approach speed is 8.7 m/s. When she is directly above the bar, her speed is 1.8 m/s. Neglecting air resistance and any energy absorbed by the pole, determine the amount(in m) she has raised herself as she crosses the bar. Supporting Materials Physical Constants