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11 November, 16:10

What is the distance required for a car traveling at 70 m/s and decelerating at 10 m/s^2 to stop?

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Answers (2)
  1. 11 November, 17:24
    0
    The answer to your question is: 245 m

    Explanation:

    data

    vo = 70 m/s

    vf = 0 m/s

    a = 10 m/s²

    d = ?

    Formula

    vf² = vo² + 2ad

    d = (vf² - vo²) / 2a

    Process

    d = (0² - 70²) / 2 (10) substitution

    d = 4900 / 20 simplify

    d = 245 m
  2. 11 November, 17:26
    0
    Answer: 245 m

    Explanation: V^2 = Vo^2 + 2. a. d

    When the car stops, V = 0.

    Therefore, 0^2 = 70^2 + 2. (-10). d

    0 = 4900 - 20d

    d = 4900/20 = 245m
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