1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Help With Some Physics Related Algebra (Projectile Motion) (Shot Put)

  1. Oct 4, 2009 #1
    1. The problem statement, all variables and given/known data
    Hello,

    My task is to derive an equation (based on projectile motion of a shot put ball) which gives the range (R) when given initial speed (v), angle of release (theta), and height of release (y)


    2. Relevant equations
    I've decided to use these equations:

    [tex]
    v_0= \frac{R}{t*cos \theta}
    [/tex]

    [tex]
    y = y_0 + v_0sin\theta* t + (1/2) g t^2
    [/tex]

    3. The attempt at a solution

    I solve [tex]
    v_0= \frac{R}{t*cos \theta}
    [/tex] and get [tex]
    t=\frac{R}{v_0*cos \theta}
    [/tex]


    then I plug it into [tex]
    y = y_0 + v_0sin\theta* t + (1/2) g t^2
    [/tex] for t and make y=0 to get max range.

    I just can't seem to solve the algebra though :(
     
  2. jcsd
  3. Oct 4, 2009 #2

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Welcome to PF!

    Hello Brereton55! Welcome to PF! :smile:

    (have a theta: θ and try using the X2 and X2 tags just above the Reply box :wink:)
    Yes, that's fine …

    the question isn't asking for the maximum range, only for the actual range for fixed values of v y and θ. :wink:
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Help With Some Physics Related Algebra (Projectile Motion) (Shot Put)
Loading...