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  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


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    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
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