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Horizontal range

  1. Feb 22, 2016 #1
    1. The problem statement, all variables and given/known data
    A ball is thrown at angles 45° and 30° above the horizontal with the same initial speed. What multiple of the horizontal range at angle 30° is that at angle 45°?

    2. Relevant equations
    Trigonometry formula

    3. The attempt at a solution
    I think that first step is to divide the initial speed into horizontal component and vertical component.
    Let the initial speed be u
    Horizontal speed of 30° angles : u x cos 30° = 1 / 2 u
    Horizontal speed of 45° angles : u x cos 45° = √2 / 2 u

    After this I'm not sure what to do next.. Since the question didn't provide time, I can't use the kinetic equation formula.
    Can anyone give me a hint about what should I do next?
     
  2. jcsd
  3. Feb 22, 2016 #2

    haruspex

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    What do you think "horizontal range" means?
     
  4. Feb 22, 2016 #3
    Horizontal distance traveled..
    Oh wait, I think I get something..
    *edit
     
  5. Feb 22, 2016 #4

    haruspex

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    Horizontal distance travelled between two points having what relationship?
     
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