S = 340 м; а = 0,2 м/с² c; v = 19 м/с.
S = (v² - v²₀)/(2а);
v² - v²₀ = 2аS;
v²₀ = v² - 2аS;
v₀ = √(v² - 2аS) = √(361 - 2·0,2·340) = √225 = 15 м/с.
t = (v - v₀)/a = (19 - 15)/0,2 = 4/0,2 = 40/2 = 20 c
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S = 340 м; а = 0,2 м/с² c; v = 19 м/с.
S = (v² - v²₀)/(2а);
v² - v²₀ = 2аS;
v²₀ = v² - 2аS;
v₀ = √(v² - 2аS) = √(361 - 2·0,2·340) = √225 = 15 м/с.
t = (v - v₀)/a = (19 - 15)/0,2 = 4/0,2 = 40/2 = 20 c