math

D = 0.08t^2 - 1.6t + 9
Why does this equation above fits this model: A student stands facing a motion detector. He quickly walks toward the detector, slows down, stops and then slowly walks away from the detector. He speeds up as he gets farther away from the detector.

  1. 👍 0
  2. 👎 0
  3. 👁 66
asked by A
  1. D = 0.08t^2 - 1.6t + 9

    is constant acceleration of +0.08 with an initial location of D = 9 and an initial velocity of -1.6
    note
    when t = 0, D = 9

    if you were into calculus I would say more:)

    1. 👍 0
    2. 👎 0
    posted by Damon
  2. just look at the graph of the parabola.
    It starts off at a certain value, which decreases, stop, turns around, and then moves back up with greater speed.

    There are other formulas which would fit the model, but the parabola is the simplest.

    1. 👍 0
    2. 👎 0
    posted by oobleck

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    what is a number model? Since this is not my area of expertise, I searched Google under the key words "number model" to get these possible sources: http://www.minet.uni-jena.de/~novak/model.html

    asked by Sydney on February 27, 2007
  2. Maths (Logs)

    1.Write the following equation without logs log y = mx+ c This would be y = 10^(mx+c) right? 2. Explain why this fits the exponential model (in other words, it can be written in the form y = a x b^x where a and b are real

    asked by BP on April 7, 2008
  3. Calculus

    Solve the exponential equation for t. Round your answer to three decimal places if necessary. e^(0.08t)=4 Please show work

    asked by Brett on November 6, 2011
  4. 12 Math

    Graph the results of a coin toss: Toss Coins 0 20 1 12 2 5 3 1 4 0 State an equation that best fits the results (use n to represent the number of the toss). What physical phenomenon does this model? I was able to graph this, I

    asked by Ali on November 10, 2010
  5. math

    d = 0.08t^2 - 1.6t + 9 A student stands facing a motion detector. He quickly walks toward the detector, slows down, stops and then slowly walks away from the detector. He speeds up as he gets farther away from the detector. How

    asked by A on March 7, 2019
  6. math

    d = 0.08t^2 - 1.6t + 9 A student stands facing a motion detector. He quickly walks toward the detector, slows down, stops and then slowly walks away from the detector. He speeds up as he gets farther away from the detector. How

    asked by A on March 7, 2019
  7. algebra

    I have no clue where to begin on this problem. Can some one help me please. One demographer believes that the population growth of a certain country is best modeled by the function P (t) =15 e^.08t, while a second demographer

    asked by Jessica on November 8, 2011
  8. Econ

    True or False: If a model fits reality but doesn't generate testable predictions, it is of little value to economists.

    asked by Abe S. on February 1, 2010
  9. Economics

    True or False: If a model fits reality but doesn't generate testable predictions, it is of little value to economists.

    asked by John Q. on February 1, 2010
  10. graphing

    im not sure how to do this question A student fires a model rocket into the air. The rocket reaches a maximum hieght of 24.8 meters and lands 55 meters from the student. (assume parabola and no wind) a. list three points of

    asked by Anonymous on February 22, 2013

More Similar Questions