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Homework Help: Terminal Speed in Projectile Motion under Air Resistance

  1. Nov 26, 2012 #1
    1. The problem statement, all variables and given/known data
    Terminal speed = 43 m s-1

    2. Relevant equations
    Acceleration in y direction when ball falling down: ay = - g + [itex]\alpha[/itex]vvy
    where [itex]\alpha[/itex] = K/m
    and v = (vx2 + vy2)^0.5

    3. The attempt at a solution
    Putting ay = 0 as there is no acceleration when terminal speed occurs.
    However, is vvy equal to v2, i.e. 432 here?
    Or do I have to compute its velocity in the y direction?
  2. jcsd
  3. Nov 26, 2012 #2


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    When at terminal speed (near as dammit), what can you say about the horizontal component?
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