¿Una persona de 60 corriendo a 4 m/s, tiene más energía cinética que un proyectil de 10 gramos a 300 m/s?

Question

¿Una persona de 60 corriendo a 4 m/s, tiene más energía cinética que un proyectil de 10 gramos a 300 m/s?

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Philomena 3 weeks 2021-08-26T18:14:37+00:00 1 Answers 0 views 0

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    2021-08-26T18:16:01+00:00

    Explanation:

    The question says that “Does a 60 kg person running at 4 m/s have more kinetic energy than a 10 gram projectile at 300 m/s ?

    Speed of a person is 4 m/s

    Mass of a person is 60 kg

    Kinetic energy of a person is : K=\dfrac{1}{2}mv^2

    So,

    K=\dfrac{1}{2}\times 60\times 4^2\\\\K=480\ J

    Mass of a projectile is 10 grams or 0.01 kg

    Speed of a projectile is 300 m/s

    Kinetic energy of a projectile is :

    K=\dfrac{1}{2}mv^2

    K=\dfrac{1}{2}\times 0.01\times (300)^2\\\\K=450\ J

    So, it is clear that the kinetic energy of a person is more than that of the kinetic energy of a projectile.

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