A box sliding down a hill going 3m/s accelerates at 2m/s2. How fast is going 4 seconds?

Question

A box sliding down a hill going 3m/s accelerates at 2m/s2. How fast is going 4 seconds?

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Latifah 3 years 2021-09-03T03:27:37+00:00 1 Answers 0 views 0

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  1. Helga
    0
    2021-09-03T03:28:43+00:00
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    Answer:

    11 m/s

    Explanation:

    The motion of the box is a uniformly accelerated motion (=constant acceleration), therefore we can use the following suvat equation:

    v=u+at

    where:

    v is the final velocity

    u is the initial velocity

    a is the acceleration

    t is the time

    For the box in this problem, we have:

    u = 3 m/s is the initial velocity

    a=2 m/s^2 is the acceleration

    t = 4 s is the time interval

    Solving for v, we find the velocity after 4 seconds:

    v=3+(2)(4)=11 m/s

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