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Homework Help: Projectile Motion

  1. Oct 9, 2007 #1
    1. The problem statement, all variables and given/known data
    An Olympic basketball player shoots towards a basket that is 5.80 m horizontally from her and 3.05 m above the floor. The ball leaves her hand 1.94 m above the floor at an angle of 64.0 degree above the horizontal.
    What initial speed should she give the ball so that it reaches the basket and hopefully scores?

    2. Relevant equations
    Vx^2 = Vox^2 + 2ax (x-xo)
    Vy^2 = Voy^2 + 2ax (y-yo)

    3. The attempt at a solution
    Im not even sure if these are the right equations to use, but in this case, I would want to find Vox and Voy? With that, can I find the magnitude of the initial speed. How do I incorporate the 64 degree angle.

    Any help is appreciated, thanks
  2. jcsd
  3. Oct 9, 2007 #2


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    The motion in the horizontal direction is not accelerated in any way and hence the velocity in the horizontal direction is constant. Use the the components method then to express the initial velocity of the ball horizontally and vertically. Knowing the distances, use the kinematics equations to derive a set of parametric equation for the projectile trajectory in the absence of air friction.
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