supposed the Kingfisher Dives with an average speed of 4.6 m / s for 1.4 seconds before hitting the water. What is the height from which the

Question

supposed the Kingfisher Dives with an average speed of 4.6 m / s for 1.4 seconds before hitting the water. What is the height from which the bird dove​

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Latifah 4 years 2021-07-29T18:10:54+00:00 1 Answers 181 views 0

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  1. Dulcie
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    2021-07-29T18:12:17+00:00
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    Answer:

    h = 1.07 m

    Explanation:

    It is given that,

    The average sped of the kingfisher, v = 4.6 m/s

    Time, t = 1.4 s

    Final speed, v = 0 (as it hits the water)

    We need to find the height from which the bird dove. Let the height is h. According to the conservation of energy.

    mgh=\dfrac{1}{2}mv^2\\\\h=\dfrac{v^2}{2g}\\\\h=\dfrac{(4.6)^2}{2\times 9.8}\\\\h=1.07\ m

    So, the bird dove from a height of 1.07 m.

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