bjr
1 km = 1000 m
et
1 h = 60 sec
donc 108 km /h
= 108 000 m / 3 600 s
= 108 000 : 3600 m / 1 s
= 30 m / s
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bjr
1 km = 1000 m
et
1 h = 60 sec
donc 108 km /h
= 108 000 m / 3 600 s
= 108 000 : 3600 m / 1 s
= 30 m / s