1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Projectile Motion

  1. Jun 8, 2009 #1
    A fixed barrel velocity, [tex]v_{0}[/tex]
    An elevation of the piece of artilery, e
    Target distance, x
    Target elevation, te

    time of travel, t
    angle of the artilery, a

    [tex]y_{0}[/tex] = te - e

    x = [tex]v_{0}[/tex] * cos(a) * t
    y = [tex]y_{0}[/tex] + [tex]v_{0}[/tex] * sin(a) * t - 0.5 * g * [tex]t^{2}[/tex]

    If you try solving these for a and t, it gets ugly. Is there an equation I am missing or another way around this?
  2. jcsd
  3. Jun 8, 2009 #2


    User Avatar
    Homework Helper

    You're y_0 seems wrong. At t=0 the elevation should be e should it not? Other than that it looks good, two equations, two variables therefore solvable.

    tip:put your entire equations between tex brackets it will look at a lot better.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook