At the bottom of a hill, a snowboarder with a velocity of 16m/s (FWD) skids to a stop after moving a distance of 9.4m. The mass of the board and rider is 71kg, and the magnitude of the force of kinetic friction during the skid is 950N. Determine the coefficient of kinetic friction during skidding. How would I go about solving this problem? What equations do I need to use?