A 0.350kg ball is dropped form a window what is the balls speed after the earth has done 15.0j of work on it

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A 0.350kg ball is dropped form a window what is the balls speed after the earth has done 15.0j of work on it

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Eirian 4 years 2021-08-12T17:09:03+00:00 1 Answers 29 views 0

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  1. thienan
    0
    2021-08-12T17:10:52+00:00
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    Answer:

    9.26 m/s

    Explanation:

    Energy, in this case kinetic energy is expressed as KE=0.5mv^{2} where m is mass and v is the velocity of the ball. Given that KE js given then making v the subject of the formula v=\sqrt {\frac {2KE}{m}}

    Substituting KE with 15 J and m with 0.35 kg then

    v=\sqrt {\frac {2\times 15}{0.35}}=9.258200997725476 m/s\pprox 9.26 m/s

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