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Homework Help: Help on velocity and displacement

  1. Aug 21, 2005 #1


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    Simpson drives his car with an average velocity of 48.0 km/h to the east, How long will it take him to drive 144 km on a straight highway?

    now i know you start out with the given which is :
    Vavg= 48.0 km/h east
    delta x= 144km
    delta t= ?
    so you have to find the delta t but i dont know how
  2. jcsd
  3. Aug 21, 2005 #2
    Umm. Isn't this just a case of [tex] Speed = \frac {Distance} {time} [/tex]

    ie... re-arranging this equation.
    Last edited: Aug 21, 2005
  4. Aug 21, 2005 #3
    But make sure to include direction, as velocity and displacement are vectors.

    Last edited: Aug 21, 2005
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