What speed does he need at the bottom if he will coast all the way up? Consider the skateboarder as a simple particle. Express your answer with the appropriate units. A 55 kg skateboarder wants to just make it to the upper edge of a "half-pipe" with radius r of 3.0 m. as shown in (Figure 1). 17 = 7.7 - Submit Previous Answers Correct Correct answer is shown. Your answer 7.66 - was either rounded differently or used a different number of significant figures than required for this part. Figure Part B In reality the skateboarder isn't a simple particle: Assume that his mass in a deep crouch is concentrated 0.75 m from the half-pipe. If he remains in that position all the way up, wh speed does he need to reach the upper edge? Express your answer with the appropriate units. Vi Template Symbols undo redo reser keyboard shortcuts help m Vi crouch 8.57