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Mechanics- sling shot being fired at wall

  1. Apr 9, 2010 #1
    Using a slingshot, the boy fires the 0.3 lb marble at the concrete wall, striking it at point B.
    If the coefficient of restitution between the marble and the wall is e= 0.6, determine the magnitude of the speed of the marble after it rebounds from the wall.

    initial velocity is 75 ft/s

    Help please! I don't even know where to start!
     

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  2. jcsd
  3. Apr 9, 2010 #2

    tiny-tim

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    Welcome to PF!

    Hi tonchik! Welcome to PF! :wink:

    Start by writing the standard constant acceleration equations for the x and y directions (separately), to find the velocity at B.

    What do you get? :smile:
     
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