1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Maximum distance apart from both cars before Car B catches up with Car B

  1. Jun 16, 2009 #1
    1. The problem statement, all variables and given/known data

    Car A travel at uniform velocity at 20 metre per second from t=0s.
    Car B starts with 5 metre per second during t=0s and accelerates uniformly to 30 metre per second in t=30s.It travels at constant velocity of 30 metre per second from there onwards

    2. Relevant equations



    3. The attempt at a solution
    A velocity-time graph is plotted for this question.

    But i just simply dunno wad to do regarding the maximum distance between both of the cars before Car B catches up with Car A.
    I need urgent help and i mean it,thanks...
    what can i do with the graph to solve this question?
     
  2. jcsd
  3. Jun 17, 2009 #2

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Welcome to PF!

    Hi cyy91! Welcome to PF! :smile:

    The distance between the cars at any time is the horizontal distance between the two graphs at that value of t.

    There are no curves … the graphs is only straight lines … and two straight lines either get continually further apart, or continually closer together … so the maximum distance must be at one of the "joins". :wink:
     
  4. Jun 17, 2009 #3
    thx alot...understood...
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Maximum distance apart from both cars before Car B catches up with Car B
  1. Speeding car (Replies: 3)

  2. A Joule Car (Replies: 1)

  3. Is a car alive? (Replies: 1)

  4. Accelerating car (Replies: 0)

Loading...