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Homework Help: Model Rocket

  1. Aug 6, 2009 #1
    A model rocket with a mass of 0.50 kg is fired vertically from the ground. Assume that it is streamlined enough that air resistance can be ignored. Suppose it ascends under the influence of a constant net force of 2.0 N acting in a vertical direction and travels for 6.0 s before its fuel is exhausted. Then it keeps moving as a particle-like object in free-fall as it continues upward, turns around, and falls back down.

    What is the net force on the rocket when it continues upward as a free fall particle? as it turns around? When it is traveling back toward the ground?
    Last edited: Aug 6, 2009
  2. jcsd
  3. Aug 6, 2009 #2


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    Welcome to PF!

    Hi wicked_vixen! Welcome to PF! :smile:

    What do you think?

    What forces are acting on the rocket once the fuel stops?

    Do they change, and if so, how? :smile:
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