Odpowiedź :
[tex]E = \frac{m {v}^{2} }{2} | \times 2 \\ 2E = m {v}^{2} | \div m \\ {v}^{2} = \frac{2E}{m} \\ v = \sqrt{ \frac{2E}{m} } [/tex]
Odp.C
[tex]E = \frac{m {v}^{2} }{2} | \times 2 \\ 2E = m {v}^{2} | \div m \\ {v}^{2} = \frac{2E}{m} \\ v = \sqrt{ \frac{2E}{m} } [/tex]
Odp.C