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Homework Help: Projectile problems

  1. Sep 10, 2008 #1
    Ina projectile motion, if we measure the maximum
    height h and horizontal range R
    (1) How to get launch angle θin terms of h and R
    (2) A hobby rocket reaches a height of 72.3 m and lands 111 m from the launch point.
    What is the angle of launch?
    What is the launch speed?


    I already did part 1. Can you provide me help with part 2. Thanks
     
  2. jcsd
  3. Sep 11, 2008 #2

    tiny-tim

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    Science Advisor
    Homework Helper

    Welcome to PF!

    Hi gamacmua! Welcome to PF! :smile:

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