Fizykaa :) Proszee... Obliczenia (Zdj)

Vp - predkosc poczatkowa = 0 Vk- predkosc koncowa = 90 km/h = 25 m/s a = 3 m/s² a = (Vk-Vp)/t t = (Vk-Vp)/a t = 25/3 = 8,33 s = Vp * t + at²/2 s =0 + 3*(8,33)²/2 s = 104m (w przyblizeniu)

Zadanie 8[latex]Dane:\Delta v= 90[ frac{km}{h}] = frac{90000[m]}{3600[s]} = 25[ frac{m}{s} ] \a = 3 [ frac{m}{s^2}] \\Szukane:\s = ?\\Rozwiazanie:\s = frac{1}{2}at^2\\a = frac{Delta v}{Delta t }= extgreater Delta t = frac{Delta v}{a} \\\Delta t = frac{25[ frac{m}{s}] }{3[ frac{m}{s^2}] } \Delta t = 8 frac{1}{3} [ s]\\\s = frac{1}{2} cdot 3cdot (8 frac{1}{3})^2\\s = 104 frac{1}{6} [m] [/latex]