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Math Help - Unit Conversion: Time & Distance

  1. #1
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    Unit Conversion: Time & Distance

    Problem: Two boys are 1250 meters apart when one begins walking toward the other. If one walks at a rate of 2 meters per second and the other, who starts walking toward the first boy four minutes later, walks at the rate of 1.5 meters per second, how long will it take for them to meet?

    Step 1: Boy 1 has a head start of 4 minutes. Converting all measurements to seconds: 4(60)= 240 seconds.

    Step 2: Here is where I am having difficulties. The author states "Because the rate is given in meters per second, all times will be converted to seconds.) So he has traveled 240(2)=480 meters. Why did we take the head start converted into seconds of 240 and multiply it by 2 to get 480 meters?

    Googled around for it and I am confused because meters is a unit of distance, and seconds is a unit of time.
    Last edited by allyourbass2212; July 12th 2012 at 07:50 AM.
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  2. #2
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    Re: Unit Conversion: Time & Distance

    Quote Originally Posted by allyourbass2212 View Post
    Why did we take the head start converted into seconds of 240 and multiply it by 2 to get 480 meters?
    How else would you calculate the distance the first boy walked during his head start?
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  3. #3
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    Re: Unit Conversion: Time & Distance

    Quote Originally Posted by emakarov View Post
    How else would you calculate the distance the first boy walked during his head start?
    Let me make sure I understand this correctly

    Boy 1 head start = 4(60)= 240 seconds

    Boy 1 : "If one walks at a rate of 2 meters per second" 2 mps * 240 seconds = 480 meters
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  4. #4
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    Re: Unit Conversion: Time & Distance

    Quote Originally Posted by allyourbass2212 View Post
    Boy 1 head start = 4(60)= 240 seconds

    Boy 1 : "If one walks at a rate of 2 meters per second" 2 mps * 240 seconds = 480 meters
    Yes.
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  5. #5
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    Re: Unit Conversion: Time & Distance

    attraction signs



    In the Time calculator, enter the distance value and conversion units designation. Then enter the speed value and conversion designation for it
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