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Homework Help: Car pushing on truck

  1. Feb 21, 2009 #1
    1. The problem statement, all variables and given/known data

    A 1000 kg car pushes a 2000 kg truck that has a dead battery. When the driver steps on the accelerator, the drive wheels of the car push against the ground with a force of 4500N . Rolling friction can be neglected.

    What is the magnitude of the force of the car on the truck?



    2. Relevant equations



    3. The attempt at a solution

    I thought it would be 4500N but its not
     
  2. jcsd
  3. Feb 21, 2009 #2

    LowlyPion

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    Homework Helper

    The 4500N force is needed to accelerate both the car and the truck.

    What portion of that is needed to accelerate just the truck?
     
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