Ashlyn threw a 1.6 kg ball. If she used 122 Joules of work to throw the ball, what was the initial velocity of the ball as it left her hand?

Question

Ashlyn threw a 1.6 kg ball. If she used 122 Joules of work to throw the ball, what was the initial velocity of the ball as it left her hand?​

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Mít Mít 2 months 2021-08-01T01:08:51+00:00 2 Answers 5 views 0

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    0
    2021-08-01T01:10:04+00:00

    The first person that answered is is correct just to let you know!

    0
    2021-08-01T01:10:45+00:00

    Answer:

    12.35\:\mathrm{m/s}

    Explanation:

    We can use the work-energy theorem to solve this problem. The work-energy theorem states that the work done on an object will be equal to that object’s change in kinetic energy. Thus, we have the following equation:

    W=\Delta KE,\\W=\frac{1}{2}mv^2-0,\\122=\frac{1}{2}\cdot 1.6\cdot v^2,\\v^2=152.5,\\v\approx \boxed{12.35\:\mathrm{m/s}}

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