Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Question about projectile motion

  1. Feb 22, 2009 #1
    I have a question when any object is in project motion is the vertical acceleration of the object equal to 9.81m/s^2 (gravity)?
     
  2. jcsd
  3. Feb 22, 2009 #2

    mgb_phys

    User Avatar
    Science Advisor
    Homework Helper

    Yes - (ignoring air resistance) remember to get the signs right, it acts down!
     
  4. Feb 22, 2009 #3

    Doc Al

    User Avatar

    Staff: Mentor

    Yes. (Given the usual assumptions: Near the earth's surface; no air resistance.)
     
  5. Feb 22, 2009 #4
    I have another question what equations can I use to find intial v, the angle and maximum height on projectile motion?
     
  6. Feb 22, 2009 #5
    For initial V you only need:

    initial V = (X - initial X) / t


    For maximum height (you are asking for final y, where initial y=0, and initial V=0) :

    y = (4.9m/s^2) (t^2)


    Finally, angles are found using Pythagoras theorem or sen, cos, and tan famous equations. Review your trigonometry.
     
    Last edited: Feb 22, 2009
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Question about projectile motion
Loading...