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Homework Help: Projectile Motion - Finding theta

  1. Oct 9, 2012 #1
    1. The problem statement, all variables and given/known data
    Iv'e been given a graphed parabola with each x interval at 0.1000s. From this I need to find R, Tt, H, V0, a and θ.

    2. Relevant equations
    Tt= 2 (Vsinθ/g)
    R= (V2sin2θ)/g

    3. The attempt at a solution
    From observing the graph I know:
    dx and dy at every 1/10 of a second.
    Tt= 2.000s
    R= 14.50cm
    H= 10.00cm

    From here I have no idea how to find V0 or θ. I'm not sure what one I have to find first in order to get the other. Any help is appreciated.
  2. jcsd
  3. Oct 9, 2012 #2
    it sounds like you were given the distance that the object traveled and its max height through this graph

    by looking at the x-direction and y-direction separately, you should be able to determine the initial velocity in both the x and y directions
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