A car accelerates uniformly in a straight line from rest at the rate of 3.7 m/s2 What is the speed of the car after it has traveled 63

Question

A car accelerates uniformly in a straight line from rest at the rate of 3.7 m/s2
What is the speed of the car after it has traveled 63 m? Answer in units of m/s.
How long does it take the car to travel 63 m? Answer in units of s

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Phúc Điền 2 months 2021-07-13T05:12:00+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-07-13T05:13:18+00:00

    Explanation:

    Using equations of motion :

    (A) we know that,

    u = 0

    a = 3.7 m/s^2

    S = 63

     {v}^{2}  =  {u}^{2}  + 2as

    v =  \sqrt{0 + 2 \times 3.7 \times 63}  = 21.6 \: m{s}^{ - 1}

    (B)

    v = u + at

    21.6 = 0 + 3.7 * t

    t (time to reach 63 m) = 5.83 seconds

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