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: NEWTON'S LAWS:

  1. Apr 19, 2007 #1
    NEWTON'S LAWS: plz help!!


    so im kinda stuck.


    a 2.5kg basketball is dropped from the top of a building. its acceleration is found to be 9.4m/s2 as it drops to the ground. What is the force of air friction on the ball as it falls?

    so like...

    fg= 24.5N

    now how do i find Ffs?:grumpy:
  2. jcsd
  3. Apr 19, 2007 #2


    User Avatar

    Staff: Mentor

    What would the acceleration be if there were no air (like in a vacuum)? What causes the difference? How can you use F=ma to solve for the air resistance force and acceleration?
  4. Apr 19, 2007 #3
    from ma=mg+Fdrag that simple. a is given, g is 9.8
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook