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Homework Help: Linear motion

  1. Apr 22, 2008 #1
    [SOLVED] linear motion

    1. The problem statement, all variables and given/known data
    Skiers leave a ski jump at 28 m/s, at an angle of 9.5 degrees below the horizontal. Their landing zone is a horizontal distance of 55 m from the end of the jumo The ground is contoured at that point so that the skiers trajectories make an angle of only 3 degrees with the ground on landing. What is the slope of the ground in the landing zone?

    2. Relevant equations
    tan theta = y/x
    x = x0 + v0t + 1/2gt^2
    y = y0 + y0t + 1/2 gt^2
    3. The attempt at a solution

    t = (x - x0)/v0 = (x - x0)/v0cos9.5 = 2s
    From here I can solve for the velocity vector at the landing, but I do not see how to solve for the x-y coordinates
  2. jcsd
  3. Apr 22, 2008 #2
    Won't v point in the same direction as the skis? As I read the problem, the angle of the slope is three degrees less than this.
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