7 i 8 zadanie. Tam gdzie przycielo pisze "energia" w 7 zadaniu.pilne!!!

7. [latex]Dane:\ E_p = 100 J\ m = 2 kg\ g = 10 m/s^2\ \ E_p = mgh\ \ h = frac{E_p}{mg} = 5 m [/latex] 8. [latex]Dane:\ Q = 6 N\ E_k = 18 J\ \ E_k = E_p\ \ E_k = mgh = Qh\ h = frac{E_k}{Q} = 3 m [/latex]