Bonjour,
t = 6 x 60 = 360 + 30 = 390 secondes
d = 2 000 m
v = d / t = 2000 / 390
v = 5,12 m/s
v = 5,12 x 60 = 307,2 m/min
v = 5,12 x 3600 = 18 432 m/h
v = 5,12 x 3,6 = 18,432 km/h
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Bonjour,
t = 6 x 60 = 360 + 30 = 390 secondes
d = 2 000 m
v = d / t = 2000 / 390
v = 5,12 m/s
v = 5,12 x 60 = 307,2 m/min
v = 5,12 x 3600 = 18 432 m/h
v = 5,12 x 3,6 = 18,432 km/h