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Conceptual Question pertaining to force

  1. Sep 18, 2010 #1
    1. The problem statement, all variables and given/known data
    An object of mass m is initially at rest. After a force of magnitude F acts on it for a time T, the object has a speed v. Suppose the mass of the object is doubled, and the magnitude of the force acting on it is quadrupled.
    In terms of T, how long does it take for the object to accelerate from rest to a speed v now?


    2. Relevant equations

    F=ma

    3. The attempt at a solution
     
  2. jcsd
  3. Sep 18, 2010 #2
    Hello,

    spend some time to concept of Impulse ;]
     
  4. Sep 18, 2010 #3
    just use NEWTON'S SECOND LAW OF MOTION
     
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