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Math Help - relative rates

  1. #1
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    relative rates

    Two people start from the same point. One walks east at 1 mi/h and the other walks northeast at 2 mi/h. How fast is the distance between the people changing after 15 minutes?

    Im getting 1.0823922003 miles but i dont think its right...
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  2. #2
    MHF Contributor Calculus26's Avatar
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    I agree with your result except I get 1.077 there may be a rounding difference.

    I used s= .368 and I believe you used s = .367 but if we assume the data to be accurate to 2 sig figs we would both have 1.1

    See attachment
    Attached Thumbnails Attached Thumbnails relative rates-relrata.jpg  
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