Sagot :
bonjour
1 h 12 min = 1.2 h = 72 min
3 h 27 min = 3.45 h = 207 min
40 min = 0.66 h environ
3 s il fait 150 m
1 s = 50 m
50 m / s = 0.050 * 3600 = 180 km /h
12 cm /min = 0.12 * 60 = 7.2 m / h
bonjour
1 h 12 min = 1.2 h = 72 min
3 h 27 min = 3.45 h = 207 min
40 min = 0.66 h environ
3 s il fait 150 m
1 s = 50 m
50 m / s = 0.050 * 3600 = 180 km /h
12 cm /min = 0.12 * 60 = 7.2 m / h