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justinebecu
@justinebecu
June 2021
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niveau 4ème exercice
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maudmarine
Verified answer
Un moucheron a volé sur une distance de 720 mètres en 1 minute 12 secondes
Calculer sa vitesse moyenne
:
Rappel formule
:
Vitesse = Distance / Temps
a)
en m.s
1 min et 12 sec = 72 secondes
V = 720/72
V = 10 m.s
Le moucheron vole en moyenne 10 m.s
b)
en m.min
10 x 60 = 600
10 m.s = 600 m.min
c)
en km/h
600 : 16,6666667 = 36
600 m.min = 36 km.h
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Verified answer
Un moucheron a volé sur une distance de 720 mètres en 1 minute 12 secondesCalculer sa vitesse moyenne :
Rappel formule :
Vitesse = Distance / Temps
a) en m.s
1 min et 12 sec = 72 secondes
V = 720/72
V = 10 m.s
Le moucheron vole en moyenne 10 m.s
b) en m.min
10 x 60 = 600
10 m.s = 600 m.min
c) en km/h
600 : 16,6666667 = 36
600 m.min = 36 km.h