¿Cuál es la masa de un objeto cuya masa es de 400 J y energía cinética de 107J?

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¿Cuál es la masa de un objeto cuya masa es de 400 J y energía cinética de 107J?

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Thành Công 4 years 2021-09-03T05:06:41+00:00 1 Answers 5 views 0

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  1. King
    0
    2021-09-03T05:08:37+00:00
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    Answer:

    Mass, m = 125 kg

    Explanation:

    Let us assume that the question says, “What is the mass of an object whose velocity is 400 m/s and the kinetic energy of 10⁷ J.

    The kinetic energy of an object is :

    K=\dfrac{1}{2}mv^2\\\\m=\dfrac{2K}{v^2}\\\\m=\dfrac{2\times 10^7}{(400)^2}\\\\m=125\ kg

    So, the mass of the object is 125 kg.

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