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Problem acceleration force vs. gravity

  1. Feb 8, 2009 #1
    urgent problem acceleration force vs. gravity

    Sorry if this is the wrong forum.

    I got a problem in my last physics class I am having some trouble with.

    A balloon goes straight up with 15m/sec.

    After the balloon went up 2m sb. drops a compass.

    But the balloon still goes up and doesn't stop.

    So the question is when (time) does the compass hit the bottom.

    So you probably need to have a equation with the acceleration force of the rising balloon and the gravity (9.8m/square second).

    Hope somebody can help me.

    Thank you very much.
     
  2. jcsd
  3. Feb 8, 2009 #2

    LowlyPion

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  4. Feb 9, 2009 #3

    Redbelly98

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    Re: urgent problem acceleration force vs. gravity

    The way I interpret the question, it is a constant 15 m/s velocity for the balloon.
     
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