Pls pomocy Wyznacz predkosc z jaka nalezy rzucic cialo pionowo do gory zeby osiagnelo wysokosc 20m

h = 20 m g = 10 m/s² V = ? Ep = Ek [latex]mgh = frac{mV^2}{2} /* 2 2mgh = mV^2 / : m [/latex] [latex]V^2 = 2gh [/latex] [latex]V = sqrt{2gh} [/latex] [latex]V = sqrt{2 * 10 frac{m}{s^2}* 20 m } = sqrt{400 frac{m^2}{s^2} } = 20 frac{m}{s} [/latex]