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Please help,A vehicle enters a test section of straight road at s =

  1. Feb 8, 2012 #1
    Please help,

    A vehicle enters a test section of straight road at s = 0 with a speed of 50 km/h. It then undergoes an acceleration which varies with displacement as shown. Determine the velocity v of the vehicle as it passes the position s = 0.30 km.

    Thanks!
     
  2. jcsd
  3. Feb 9, 2012 #2

    tiny-tim

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    hi varsitymsb5! :wink:

    show us what you've tried, and where you're stuck, and then we'll know how to help! :smile:
     
  4. Feb 9, 2012 #3
    Re: dynamics

    ∫vdv from 8.33E-4 to v = ∫ads from 0 to 300
    v^2=vnot^2+2a(snot-s)=(8.33E-4)^2+2(.4)(300)
    v=15.49m/s

    This is what I did but the answer is wrong and not sure what I did wrong.
     
  5. Feb 9, 2012 #4

    tiny-tim

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    so the question says that a is a function of s …

    what function? :confused:
     
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