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Melmae13
@Melmae13
April 2019
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Un cargo traverse les 35 000 km de l'atlantique en 52 jours et 2h.
a) Calculer sa vitesse moyenne en km.h (puissance -1)
b) Exprimer cette vitesse en m.s(puissance -1). Arrondir au dixième.
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winner123
Verified answer
Bonjour
distance = 35 000 km
durée = 52 jours et 2 h soit 1 250h
vitesse = distance/ temps
vitesse = 35 000 : 1 250 =
28 km/h
28 km/h = 28000 : 3600 =
7.8 m/s
1 votes
Thanks 3
melmae13
salut, pourquoi 3600 ???
winner123
parce que dans 1 h, il y a 3600 secondes.
melmae13
ah d'accord! Merci :D
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Verified answer
Bonjourdistance = 35 000 km
durée = 52 jours et 2 h soit 1 250h
vitesse = distance/ temps
vitesse = 35 000 : 1 250 = 28 km/h
28 km/h = 28000 : 3600 = 7.8 m/s