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A football is thrown upward at a 43 degree angle to the horizontal

  1. Sep 14, 2007 #1
    A football is thrown upward at a(n) 43 degree angle
    to the horizontal.
    The acceleration of gravity is 9.8 ms^2 :
    To throw a(n) 77.8 m pass, what must be
    the initial speed of the ball? Answer in units
    of ms.
     
  2. jcsd
  3. Sep 14, 2007 #2

    cristo

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    Again, you need to show some work. Are you familiar with the kinematic equations for constant acceleration? Do any apply here?
     
  4. Sep 14, 2007 #3
    i need some major help i know the formula for a= vf-vi/t
     
  5. Sep 14, 2007 #4

    cristo

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    Try considering vertical and horizontal components separately, and look at the equations I gave you in your other thread. Have a go and I'll guide you, but I'm not going to set up every one of your questions for you.
     
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