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: Acceleration of wooden ball

  1. Dec 2, 2009 #1
    1. The problem statement, all variables and given/known data
    If you were to throw a wooden ball up one meter and then let it fall down to a negative meter, where would it accelerate?

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Dec 2, 2009 #2


    User Avatar
    Science Advisor
    Homework Helper

    Re: velocity

    All the way down.
    Gravity always acts on it, so as long as it is in the air it has non-zero acceleration a = Fgrav/m.
    Only when you hold it (straining your muscles to do so) or letting the ground exert a normal force, you can cancel it such that the net force is zero hence a = 0..
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook