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Math Help - Estimating Rates of Change

  1. #1
    Junior Member
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    Estimating Rates of Change

    I need help with the question: a diver is on the 10 m platform; the diver's height above the water, in metres, at time t can be modelled using the equation h(t) = 10 + 2t -4.9t2. Estimate the rate at which the diver's height above the water is changing as the diver enters the water.

    I know that the time that the diver hits the water is around 1.65 seconds and I tried to find the average rate of change between 0 seconds and 1.65 seconds, but the rate that I calculated was around -6 m/s.
    I know that the correct answer is about 14 m/s but I'm not sure how to solve for this answer.
    Any suggestions would be appreciated, please and thank you!
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  2. #2
    MHF Contributor
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    Re: Estimating Rates of Change

    Hey misiaizeska.

    What kind of techniques are taughlt in your course? I'm guessing it's pre-calculus because an easy way would be to use calculus.

    In this kind of situation its a good idea that we know what you are being taught since other solutions may confuse or get you into trouble with your marks.
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