Bonjour,
9 s -------> 270 m
1 s -------> 270/9 = 30 m
1 h = 3 600 s
donc : 30 m/s = (30 × 3 600) m/h
= 108 000 m/h
= 108 km/h
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Bonjour,
9 s -------> 270 m
1 s -------> 270/9 = 30 m
1 h = 3 600 s
donc : 30 m/s = (30 × 3 600) m/h
= 108 000 m/h
= 108 km/h