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m = 1200kg
V = 72 km/h = 2m/s
F = 2000N
Szukane:
t = ?
F = m * a
2000N = 1200kg * a //1200kg
2000N/1200kg = a
a = 1.66 m/s²
a = V/t /*V
t = a *v
t = 1.66 m/s2 * 2 m/s
t = 3.32 s
Odpowiedź: Czas hamowania samochodu wynosi 3.32s.