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Thread: Quick help please!! definite integral

  1. #1
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    Quick help please!! definite integral

    Two cars travel in the same direction along a straight road. Figure 5.14 shows the velocity, v, of each car at time t. Car B starts 2 hours after car A and car B reaches a maximum velocity of 44 km/hr.

    Figure 5.14


    (a) For approximately how long does each car travel?


    (b) Estimate car A's maximum velocity.


    (c) Approximately how far does each car travel?


    i need some help with this one. like i dont know how to find the different values and what not

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  2. #2
    Moo
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    Hello,

    See where the velocity of A starts. This is the moment when car A starts.
    See where it is for B.

    You know that B starts 2 hours after A. So a graduation on the graph will correspond to 2 hours.

    Car B travels on "two graduations", that is to say .. hours

    Car A travels on "4 graduations", that is to say .. hours



    This is the same for the maximum velocity. You know that the two can reach 44. But only one seems to reach it. So estimate to what speed corresponds a graduation on the graph.
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