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Angle at Maximum Height

  1. Nov 24, 2013 #1
    1. The problem statement, all variables and given/known data

    the initial velocity of a projectile is 150 m\s .the angle between the velocity vector and the trajectory at the projectile's maximum height is
    a) 90
    b) 45
    c) zero
    d) 63.1
    e) 36.9

    2. Relevant equations

    Vox= vx = Vocosθ
    Vy = Vosinθ-gt
    Range (R) = (vo)^2*sin(2θ)/g
    Maximum Height (H) = (vo)^2*(sinθ)^2/2g

    3. The attempt at a solution

    http://im40.gulfup.com/43qMA.jpg [Broken]

    in this image we can see that the angle at the maximum height is 0 but I want to get sure ?
     
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. Nov 24, 2013 #2

    CWatters

    User Avatar
    Science Advisor
    Homework Helper

    Correct.
     
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