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Projectiles with three boats.

  1. Sep 9, 2012 #1
    1. The problem statement, all variables and given/known data

    A destroyer simultaneously fires two shells with different initial speeds at two different enemy ships. The shells follow the parabolic trajectories shown.
    http://smartphysics.com/Content/Media/Images/Mechanics/02/Destroyer2.gif [Broken]

    Which ship gets hit first?

    2. Relevant equations



    3. The attempt at a solution
    I'm not sure how to figure this one out since they both have different initial speeds. But my guess would be the same time since they both have the same maxium height and therefore same "hang time"
     
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. Sep 9, 2012 #2
    What is asked??
     
  4. Sep 10, 2012 #3
    i edited the question in
     
  5. Sep 10, 2012 #4

    rl.bhat

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    Homework Helper

    Write the formula for the height of the projectile. Equate them for the two shells.
    Write down the final vertical component of the velocity of the projection. Since it is zero for both the shells, equate them.
    Now proceed.
     
  6. Sep 10, 2012 #5

    PeterO

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    Homework Helper

    I like the way you are thinking!!
     
    Last edited by a moderator: May 6, 2017
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