1)
s = v × t
s = 6 [tex]\frac{m}{s}[/tex] × 2 min = 6 [tex]\frac{m}{s}[/tex] × 120 s = 720 m
2)
s = v × t
s = 6 [tex]\frac{m}{s}[/tex] × 3 s = 18 m
3)
t = [tex]\frac{s}{v}[/tex]
t = [tex]\frac{5,4 km}{6 m/s}[/tex] = [tex]\frac{5400 m}{6 m/s}[/tex] = 900 s = 15 min