A car rolls backward from -2 to -10 m/s in 4 seconds. what is the acceleration. PLEASE HELP WILL GIVE BRAINLIEST

Question

A car rolls backward from -2 to -10 m/s in 4 seconds. what is the acceleration. PLEASE HELP WILL GIVE BRAINLIEST

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Thái Dương 6 months 2021-07-26T22:29:44+00:00 1 Answers 3 views 0

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  1. thienthanh
    0
    2021-07-26T22:30:45+00:00
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    \bf \underline{Given : }

    • Initial velocity,u = -2 m/s
    • Final velocity,v = -10 m/s
    • Time taken, t = 4 seconds

    \bf \underline{To \: find \: out : }

    Find the acceleration ( a ) .

    \bf \underline{Solution : }

    We know that,

    \sf \: Acceleration = \dfrac{v - u}{t}

    Substituting the values in the above formula, we get

    \implies \sf \: Acceleration = \dfrac{ - 10 - ( - 2)}{4}

    \implies\sf \: Acceleration = \dfrac{ - 10 + 2}{4}

    \implies \sf \: Acceleration = \cancel \dfrac{ - 8}{4}

    \implies\sf \: Acceleration = - 2 \: ms {}^{ - 2}

    Hence,the acceleration of a body is -2 m/s².

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