In a shot-put competition, a shot moving at 15m/s has 450J of mechanical kinetic energy. What is the mass of the shot? Please help, and incl

Question

In a shot-put competition, a shot moving at 15m/s has 450J of mechanical kinetic energy. What is the mass of the shot? Please help, and include the formula for the answer and a step by step explanation

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Hưng Khoa 5 months 2021-08-15T00:07:33+00:00 1 Answers 11 views 0

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    2021-08-15T00:08:37+00:00

    Answer:

    Mass of shot (m) = 4 kg

    Explanation:

    Given:

    Velocity (v) = 15 m/s

    Mechanical kinetic energy (K.E) = 450 J

    Find:

    Mass of shot (m) = ?

    Computation:

    Mechanical kinetic energy (K.E) = 1/2mv²

    Mechanical kinetic energy (K.E) = [1/2](m)(15)²

    450 = [1/2](m)(15)²

    900 = 225 m

    Mass of shot (m) = 4 kg

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