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Resistive Force

  1. Sep 22, 2012 #1
    1. The problem statement, all variables and given/known data
    On Land, a 5000kg amphibious vehicle can accelerate from rest to 10 m/s in 25 sec.


    Find...
    a)Final Kinetic Energy?
    -250,000
    b)Avg Power furnished by engine during acceleration?
    -10,000
    c)If the same power is required to propel the vehicle through water at a constant 2 m/s, What is the magnitude of the resistive force being overcome?

    The attempt at a solution
    I havent learn or dont know what is the meaning of Resistive Force, I tried searching for a formula online but they do not make sense.
     
  2. jcsd
  3. Sep 22, 2012 #2
    This is a force that resists the motion. What does constant velocity mean?
     
  4. Sep 24, 2012 #3
    speed remains the same, it does not increase or decrease
     
  5. Sep 24, 2012 #4
    Yes, but what does that mean regarding the net force acting on the vehicle?
     
  6. Sep 24, 2012 #5
    instantaneous acceleration?
     
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