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Final speed ?

  1. Aug 18, 2009 #1
    final speed ??

    A 5 kg vase is lifted vertically from rest to a distance of 10 m with a constant upward applied force of 60.0 N. Calculate

    iii) the final speed of the vase

    F=ma
    60=5(a)
    a=12

    v^2 = U^2+2as
    v^2=0+2(12)(10)
    V^2 = 240
    v= 15.49m/s

    is the step correct~??

    thanks for reply~
     
    Last edited: Aug 18, 2009
  2. jcsd
  3. Aug 18, 2009 #2
    Re: final speed ??

    What about mg?
     
  4. Aug 18, 2009 #3
    Re: final speed ??

    is that have to include mg??
     
  5. Aug 18, 2009 #4
    Re: final speed ??

    Yes. You have three forces acting on a vase: F, mg & ma.
     
  6. Aug 18, 2009 #5
    Re: final speed ??

    then can you show me the step to get the final speed??
     
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