A truck running at 115 km / h slows down at a rate of 4 m / s every 2 seconds. How far will it travel to a stop? choose the correct option 1

Question

A truck running at 115 km / h slows down at a rate of 4 m / s every 2 seconds. How far will it travel to a stop? choose the correct option 1) 335.04m 2) 205.04m 3) 255.04m

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RuslanHeatt 2 months 2021-08-15T05:27:14+00:00 1 Answers 2 views 0

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    2021-08-15T05:29:00+00:00

    Answer:

    3) 255.04 m

    Explanation:

    Given:

    v₀ = 115 km/h = 31.944 m/s

    v = 0 m/s

    a = -(4 m/s) / 2s = -2 m/s²

    Find: Δx

    v² = v₀² + 2aΔx

    (0 m/s)² = (31.944 m/s)² + 2 (-2 m/s²) Δx

    Δx = 255.11 m

    Closest answer is option 3.

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