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Homework Help: Find the accleration of gravity on planet Zircon.

  1. Feb 21, 2010 #1
    1. The problem statement, all variables and given/known data
    An astronaut on the planet Zircon tosses a rock horizontally with a speed of 6.95 m/s . The rock falls through a vertical distance of 1.10 meters and lands a horizontal distance of 8.85 meters from the astronaut.


    2. Relevant equations



    3. The attempt at a solution

    ΔX = 1/2(Vi + Vf)T
    T = 2ΔX / (Vi + Vf)
    T = (2)(8.85) / (9.95 + 0)
    T = 1.778 s


    ΔY = ViT + 1/2AT^2
    ΔY - ViT = 1/2AT^2
    A = 2(ΔY - ViT) / T^2
    A = 2(1.10 - 0) / (1.778)^2
    A = 1.58 m/s^2
     
  2. jcsd
  3. Feb 21, 2010 #2

    kuruman

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    Science Advisor
    Homework Helper
    Gold Member

    Where did you get these numbers 8.85 and 9.95?
    Why should the horizontal component of the velocity on planet Zircon change?
     
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