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!

Constants in Projectiles

  1. Jul 13, 2007 #1
    1. The problem statement, all variables and given/known data

    For type 1, 2, or 3 projectiles, which of the following are constant?

    Dx, Dy, Vx, Vy

    2. Relevant equations

    3. The attempt at a solution

    I figure that the only one that is constant in all situations would be Vx because there is no acceleration in the x direction.

    Dx would change depending on the height of launch, so would dy, and Vy, would depend on height as well because of gravity. But am I interpreting 'constant' correctly. Vx is the only horizontal straight line in a graph vs time but others are straight just not horizontal.

    Basically, what does constant mean in physics in the context of this question?
  2. jcsd
  3. Jul 13, 2007 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    What are type 1, 2 and 3 projectiles? What are the quantities you have listed? Presumably Vx and Vy are velocity in the x and y directions respectively. Are the D's distance?
  4. Jul 13, 2007 #3
    Type 1- horizontal launch off cliff
    Type 2 - angled launch landing at same height as launch
    Type 2 - angled launch landing at different height as launch

    D is displacement
    And V is velocity and x and y are the horizontal and vertical components respectively.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook