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!

Plot 2d trajectory

  1. May 19, 2010 #1
    I'm trying to plot out the trajectory of an object in a program that is looping through the function and spitting out the x and y coordinates, but I'm having trouble. I want to see a parabola starting at 0,0 going up and ending again at x,0.

    Basic question:

    (units aren't critical here f/s m/s anything as long as they're all the same)
    initial velocity in x = 50
    initial velocity in y = 100

    x coordinate:
    x = v * t
    x = 50 * 1
    x1 = 50

    y coordinate:
    y = v + .5gt^2
    y = 100 + -4.9
    y1 = 95.1

    I'm missing something here. How do I get the points along the path of the trajectory starting at 0,0 instead of starting at 0, 95.1 as the first coordinate?

    Last edited: May 19, 2010
  2. jcsd
  3. May 19, 2010 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    You mean y = 100*t -4.9*t2

    You get point y1 when you set t =1 in the above equation. You get the earlier point y0 when you set t = 0 in the above equation.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook