Ответ:
[tex]ek = \frac{m \\ {v \\ \\ }^{2} }{2} = \frac{ {5 \times 4}^{2} }{2} = \frac{ {5 \times}{16} }{2} = \frac{80}{2} = 40[/tex]
40 Дж
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Ответ:
[tex]ek = \frac{m \\ {v \\ \\ }^{2} }{2} = \frac{ {5 \times 4}^{2} }{2} = \frac{ {5 \times}{16} }{2} = \frac{80}{2} = 40[/tex]
40 Дж