How long does it take for a car that started to move without an initial speed with an acceleration of 0.5 m / s ^ 2 to travel 80 m?

Initial data: the car started moving without initial speed (V0 = 0 m / s); a (vehicle acceleration) = 0.5 m / s2; S (path the car must travel) = 80 m.
We express the driving time of the car from the formula: S = a * t ^ 2/2, whence t2 = 2S / a and t = √ (2S / a).
Calculation: t = √ (2 * 80 / 0.5) = √320 = 17.9 s.
Answer: The car will travel 80 m in 17.9 s.