Oblicz droge hamowania auta ktore w ciagu 12s zatrzymalo sie choc poczatkowo jechalo z predkoscia 144 km/h

t = 12 s Vo = 144 km/h = 144*1000 m /3600 s = 40 m/s Vk = 0  s = ? [latex]s = frac{V*t}{2} [/latex] [latex]s = frac{40 frac{m}{s} * 12 s }{2} = 240 m [/latex] wyprowadzenie wzoru : [latex]s = Vot - frac{at^2}{2} [/latex] [latex]V = Vo- at ........... extgreater V = 0 [/latex] [latex]a = frac{Vo}{t} [/latex] [latex]s = Vot - frac{ frac{Vo}{t} * t^2 }{2} = Vot - frac{Vot}{2} = frac{2Vot - Vot }{2} = frac{Vot}{2} [/latex]