An automobile slows from 26 m/s to 18 m/s. Its acceleration is -2.0 m/s2. How much time does it take for the vehicle to slow dow

Question

An automobile slows from 26 m/s to 18 m/s. Its acceleration is
-2.0 m/s2. How much time does it take for the vehicle to
slow down?

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Đan Thu 6 months 2021-07-16T10:29:16+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-07-16T10:30:32+00:00

    Given:

    Initial velocity,u = 26 m/s

    Final velocity,v = 18 m/s

    Acceleration,a = -2 m/s²

    To be calculated:-

    Calculate the time take by a body.

    Solution:-

    According to the first equation of motion:

     \bf \: v = u + at

    ★ Substituting the values in the above formula,we get:

      \sf\implies18 = 26  + ( - 2) \times t

     \sf \implies18 = 26 - 2t

     \sf \implies \: 2t = 26 - 18

     \sf \implies \: 2t = 8

     \sf \implies \: t =   \cancel\dfrac{8}{2}

     \sf \implies \: t = 4 \: sec

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