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Homework Help: Rocket with changing mass

  1. Oct 13, 2008 #1
    Can I do a rocket problem with changing M without involving
    an integral?
    I am currently taking Calculus 1 and have not learned
    that yet, although derivatives are no problem.

    The Problem:

    2 parts

    1st part: find the max V when fuel runs out.

    2nd part: find the R(range), where the rocket crashes when fuel runs out.
  2. jcsd
  3. Oct 13, 2008 #2
    as far as i know,we have to make a communication with integral.
    and i think in order to solve the problem you'd better state the conditions clearly.
  4. Oct 14, 2008 #3
    This is not a problem that I need help solving, only, I need
    help determinging if I MUST use an integral,

    physics problems are two parts right, physics part, then math. Well I need help on the math.

    it seems as if I should be able to use derivatives only for Newtons 2nd law.
  5. Oct 14, 2008 #4
    I think the short answer is, no. You will need to do an integral. Find a friend who has taken calc 2.
  6. Oct 15, 2008 #5
    That answers my question. Thank you.
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