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Acceleration of gravity and baseball problem

  1. Sep 17, 2005 #1
    during a baseball game, a batter hits a popup to a fielder a distance of D m aways. the acceleration of gravity is 9.8m/s^2. if the ball reamins in the air for T seconds, how high does it rise.
    1. h=D/4T
    2.h=1/8gT^2
    3.h=4D/T
    4.h=2D/T
    5.h=D/T
    6.h=2gT^3
    7.h=D/(2T)
     
  2. jcsd
  3. Sep 17, 2005 #2
    Key:2

    the motion in the direction of gravity is not ralated with D, h=0.5gt^2.
    t is half of T, for T is up and down, and t is up or down
     
  4. Sep 17, 2005 #3
    ?

    so which one is the answer?
     
  5. Sep 17, 2005 #4

    Fermat

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    Well, the answer is unrelated to D, so that eliminates 5 of the options.
     
  6. Sep 17, 2005 #5
    ?

    yea but which one cause if i get it wrong it deducts from my score. n my score is bad enough
     
  7. Sep 17, 2005 #6

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    Neverland's answer should give you a clue, but you should really be able to work it out by yourself.
    The question is asking you to show your knowledge of basic equations of motion.
    Do you know these ?
     
  8. Sep 18, 2005 #7
    thanks

    i figured it out but now they are asking for the angle and they give you the distance and time.

    is the distance half of at the maximum height?
     
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