Respuesta :

emojiman

[tex]k = \frac{1}{2} mv {}^{2} [/tex]
[tex]100 = \frac{1}{2} \times 10 \times v {}^{2} [/tex]
[tex]100 = 5v {}^{2} [/tex]
[tex]v {}^{2} = 20[/tex]
[tex]v = \sqrt{20} = 2 \sqrt{5} [/tex]

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