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Homework Help: Projectile motion, Cat jumping off table

  1. Sep 15, 2012 #1
    1. The problem statement, all variables and given/known data
    A cat jumps off of the table with a velocity vi at an angle θ. The table is h meters tall. How far away from the table is the cat?
    V(x) = ViCosθ
    V(y) = ViSinθ

    2. Relevant equations
    I first solved for time using 0 = Xi + Vit +1/2a(t^2)

    3. The attempt at a solution
    I got time as
    t = ViSinθ-√(Vi2Sinθ2 + 2gh) / g

    But my teacher got a answer slightly different. Am I solving for time the write why? I think so. If not, What am I missing? Thanks
  2. jcsd
  3. Sep 15, 2012 #2


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    Homework Helper

    The negative sign should be positive in the expression of t.
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