How long would it take you too run the 100m sprint if from rest you accelerate at 2m/s/s for the whole race?

Question

How long would it take you too run the 100m sprint if from rest you accelerate at 2m/s/s for the whole race?

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Vodka 3 years 2021-07-23T00:18:05+00:00 1 Answers 14 views 0

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  1. kiet
    0
    2021-07-23T00:20:04+00:00
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    Answer:

    10 s

    Explanation:

    Given:

    Δx = 100 m

    v₀ = 0 m/s

    a = 2 m/s²

    Find: t

    Δx = v₀ t + ½ at²

    100 m = (0 m/s) t + ½ (2 m/s²) t²

    t = 10 s

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )