A skier with a mass of 98k including the mass of the skis, starts from rest and comes down an incline hill that has an elevation of 320. If the coefficient of kinetic friction is 0.05 due to the interaction of skis and snow. Determine the normal force, remember to set your reference frame so that the x-axis is in the direction of motion. Write an equation for Newton's Second Law and solve for the acceleration down the incline. How much time will it take for his or her velocity to reach 18 m/s?