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cum se afla viteza daca stim masa si energia cinetica?
cum se afla masa daca stim viteza si energia cinetica?


Răspuns :

[tex]Ec= \frac{m v^{2} }{2} \\ m= \frac{Ec*2}{v^2} \\ v^2= \frac{Ec*2}{m} , v= \sqrt{ \frac{Ec*2}{m} } [/tex]

[tex] E_{c} = \frac{m* v^{2} }{2} [/tex]
[tex]v= \sqrt{ \frac{2 E_{c} }{m} } [/tex]
[tex]m= \frac{ E_{c}*2 }{ v^{2} } [/tex]