A car starts its motion from rest and accelerates with an acceleration of 3m/s2 speed reaches to 20.0m/sec. Find time interval during this m

Question

A car starts its motion from rest and accelerates with an acceleration of 3m/s2 speed reaches to 20.0m/sec. Find time interval during this motion.

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Hồng Cúc 1 year 2021-09-04T05:22:11+00:00 1 Answers 14 views 0

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  1. thuthuy
    0
    2021-09-04T05:23:52+00:00
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    Answer:

    The time interval is  [tex]t = 6.667 \ s[/tex]

    Explanation:

    From the question we are told that

        The acceleration of the car is  [tex]a = 3 m/s^2[/tex]

         The velocity of the car is  [tex]v= 20.0 \ m/s[/tex]

    The final velocity of the car can be mathematically represented as

           [tex]v =u + at[/tex]

    Now since the car start from rest  u = 0 So

          [tex]v = 0 + at[/tex]

           [tex]v = at[/tex]

    substituting values

           [tex]20 = 3 t[/tex]

           [tex]t = \frac{20}{3}[/tex]

            [tex]t = 6.667 \ s[/tex]

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