A car starting from rest has a constant acceleration of 4 meters per second per second. How fast will it be going in 5 seconds?

Question

A car starting from rest has a constant acceleration of 4 meters per second per second. How fast will it be going in 5 seconds?

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Mít Mít 3 years 2021-07-16T04:58:02+00:00 1 Answers 28 views 0

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  1. taiduc
    0
    2021-07-16T04:59:25+00:00
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    Answer:

    18 m

    Explanation:

    Given : vo = 0 m/s ; t = 3 s; a = 4 m/s^2 ; d = ? m ; average velocity = ? m/s ; fonal velocity = ? m/s

    solving for the final velocity, v

    v = a * t

    v = 4 m/s^2 * 3 s

    v = 12 m / s

    Solving for the average velocity. avg v

    avg v = (vo + v) / 2

    avg v = (0 m / s + 12 m/s) / 2

    avg v = 6 m / s

    Solving for the distance traveled after 3 s

    d = avg v * t

    d = 6 m / s * 3 s

    d = 18 meters

    In the first 3s the car travels 18 meters.

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