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!

Projectile motion with air resistance

  1. May 21, 2012 #1
    Hey guys, Im in the process of writing a program for pmotion with air resistance that is proportional to the velocity squared and ive hit a stump. In my program it simulates the path of the ball by changing the time and putting it into the equation and plotting it on a graph. My problem is all the equations i have found using air resistance has mass. I know this question is not 100% physics but if anyone could help It would be greatly appreciated

    The program allows only the input of the horizontal velocity component and the vertical velocity component

    Last edited: May 21, 2012
  2. jcsd
  3. May 21, 2012 #2


    User Avatar
    Science Advisor

    You have Fd=-kv², and you have ƩF=ma. All that really affects the motion here is the ratio k/m. Call it some constant c=k/m, and then you don't have to worry about the mass.

    By the way, in 1D, you can solve for v(t) directly.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook