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Math Help - Projectile Motion Problem

  1. #1
    Junior Member Shadow236's Avatar
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    Projectile Motion Problem

    This is the current problem that I am working on: "A volleyball is spiked so that it has an initial velocity of 14.1 m/s directed downward at an angle of 58.4 below the horizontal. What is the horizontal component of the ball's velocity when the opposing player fields the ball?"

    I can draw out a picture perfectly fine for this, but for some reason I struggle with figuring out what I need and how to get it. For this problem it seems that I need to find Vox because It said to find the horz. component when the ball is hit. I have a hint that says that the horz. acceleration, ax, is zero. Does this mean that I need to use the equation: Vx2 = Vox2 + 2axX?
    I'm guessing I use that equation because there is no time value given.
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    Re: Projectile Motion Problem

    Projectile Motion Problem-clipboard01.jpg
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  3. #3
    Junior Member Shadow236's Avatar
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    Re: Projectile Motion Problem

    So does this mean that Vx = cos(58.4 deg)? Because I think the initial velocity value they give me might have something to do with it.
    Last edited by Shadow236; February 20th 2014 at 12:55 PM.
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    Re: Projectile Motion Problem

    Quote Originally Posted by Shadow236 View Post
    So does this mean that Vx = cos(58.4 deg)? Because I think the initial velocity value they give me might have something to do with it.
    |V| is 14.1 m/s

    so Vx = 14.1 cos(58.4 degrees)
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