A body starts from rest and moves with a uniform acceleration of 2 m/s2 in a straight line. What is the velocity after 5s, How far has

Question

A body starts from rest and moves with a uniform acceleration of 2 m/s2 in a
straight line. What is the velocity after 5s, How far has it travelled in this time and When will it be 100m from its starting point?

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Khoii Minh 5 years 2021-07-25T13:39:55+00:00 1 Answers 242 views 1

Answers ( )

  1. Thunguyet
    0
    2021-07-25T13:41:04+00:00
    Reply

    Answer:

    Final velocity = 10 m/s

    Time taken to travel 100 meter = 8.16 second (Approx.)

    Explanation:

    Given:

    Acceleration = 2 m/s²

    Initial velocity = 0 m/s

    Find:

    Velocity after 5 seconds

    Time taken to travel 100 meter

    Computation:

    Using first equation of motion

    v = u + at

    v = 0 + (2)(5)

    Final velocity = 10 m/s

    Using Second equation of motion

    s = ut + (1/2)(a)(t²)

    100 = (0)(t) + (1/2)(3)(t²)

    100 = (1/2)(2)(t²)

    100  = (t²)

    t = 10

    Time taken to travel 100 meter = 8.16 second (Approx.)

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