Answer 1 of 17 or 18 17. A 49 kg snowboarder descends a 0.45 km ski slope from the top of a mountain to the base as shown in the system diagram. If the friction on the slope is negligible and they started at a speed of 2.1 m/s, a) calculate the speed of the snowboarder when they reach the base of the mountain. b) If there is a coefficient of friction between the snowboarder and the surface of 0.44 while traveling along the horizontal at the base of the mountain, determine the distance the 8 = 140 snowboarder will travel before stopping