If the boat goes from 30 km/h to 50 km/h over the next 4 h, what is its acceleration? Please help me

Question

If the boat goes from 30 km/h to 50 km/h over the next 4 h, what is its acceleration?
Please help me

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Diễm Kiều 2 months 2021-07-28T01:32:02+00:00 1 Answers 2 views 0

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    2021-07-28T01:33:30+00:00

    Answer:

    The acceleration is 5km/h

    Explanation:

    Given

    Initial Velocity (u) = 30km/h

    Final Velocity (v) = 50km/h

    Time (t) = 4h

    Required

    Determine the acceleration

    This question will be answered using the first equation of motion;

    v = u + at

    Substitute values for u, v and t

    50 = 30 + a * 4

    50 = 30 + 4a

    Subtract 30 from both sides

    50 - 30 = 30 - 30+ 4a

    20 = 4a

    Divide both sides by 4

    \frac{20}{4} = \frac{4a}{4}

    5 = a

    a = 5

    Hence;

    The acceleration is 5km/h

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