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Homework Help: Exam review question (acceleration)

  1. Feb 4, 2010 #1
    1. The problem statement, all variables and given/known data

    A force of 1 N pushing on a mass m1 results in an acceleration of 1.0 m/s2. The same force acting on mass m2 results in an acceleration of 3.00 m/s2. What is the acceleration a3 for the same force pushing the combination of m1 and m2?

    2. Relevant equations

    well I know that acceleration = force/mass lol

    3. The attempt at a solution

    this is a example problem for my first test tomorrow morning.. honestly I don't have a clue how to solve this problem and a good explanation would be very helpful.

    two other problems from the exam review

    ACCELERATIONS for SAME FORCE on DIFFERENT MASSES

    A force F acting on a mass m1 results in an acceleration a.
    The same force F acting on mass m2 results in an acceleration 0.20 a.
    What is the acceleration anew for F pushing the combination of m1 and m2?

    A force F of 3 N acting on a mass m1 results in an acceleration of 1 m/s2.
    The same force F acting on mass m2 results in an acceleration of 0.20 m/s2.
    What is the acceleration a3 for F pushing the combination of m1 and m2?
     
  2. jcsd
  3. Feb 4, 2010 #2
    Well we know that:
    [tex] \vec{F}=m\vec{a}[/tex]
    What is m in this situation?
    What is the total mass?
     
  4. Feb 4, 2010 #3
    do you combine the masses? i mean really i dont have a clue how to solve this problem
     
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