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Homework Help: Projectile motion(3)

  1. Oct 2, 2009 #1
    1. The problem statement, all variables and given/known data

    At time t = 0 s, a large rock is launched horizontally from a tall cliff at 5 m/s. Define a coordinate system with its origin located at the edge of the cliff, its x-axis aligned with the initial velocity of the rock, and its y-axis pointing upwards. Take the acceleration of gravity to be exactly 10m/s² (rather than 9.8 m/s²) to simplify the mathematics.

    a) How fast is the rock traveling and how many meters away from the edge of the cliff is the rock after 2 seconds?

    b) Complete the attached table (check the attached file)

    2. Relevant equations

    y=yi + Vyi △t +1/2ay △t²

    3. The attempt at a solution

    Attached Files:

  2. jcsd
  3. Oct 3, 2009 #2


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    Science Advisor
    Homework Helper

    Welcome to PF!

    Hi kevin948! Welcome to PF! :wink:

    Show us what you've tried, and where you're stuck, and then we'll know how to help! :smile:
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