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Homework Help: Net force is required to bring the truck to a stop

  1. Jan 21, 2007 #1
    1. The problem statement, all variables and given/known data
    A 1.2*10power of 4 kg truck is travelling South as 22m/s
    A)what net force is required to bring the truck to a stop in 330m
    B)what is the cause of this net force

    2. Relevant equations
    Fnet=ma



    3. The attempt at a solution
    m=1.2*10power of 4 kg
    Fnet=ma
    = 1.2*10power of 4 kg

    Thats as far as i got
     
  2. jcsd
  3. Jan 21, 2007 #2

    cristo

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    Staff Emeritus
    Science Advisor

    Hint: try considering work and energy.
     
  4. Jan 21, 2007 #3
    you know the trucks initial energy, right? What concept refers to change in energy?
     
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