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Mallouka2002
@Mallouka2002
April 2019
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Exprimer en m/s, les vitesses suivantes:
a) 0.023 km/s
b) 45 km/h
c) 18 km.min∧-1
d) 540 m.min∧-1
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maudmarine
Verified answer
Exprimer en m/s, les vitesses suivantes
:
a) 0.023 km/s
0,023 km = 23 m
Donc :
0,023 km.s = 23 m.s
b) 45 km/h
45 km = 45000 m
1 h = 3600 sec
45000 : 3600 = 12,5 m.s
Donc :
45 km.h = 12,5 m.s
c) 18 km.min∧-1
18 km = 18000 m
1 min = 60 sec
18000 : 60 = 300 m.s
Donc :
18 km.min = 300 m.s
d) 540 m.min∧-1
1 min = 60 sec
540 : 60 = 9 m.s
Donc :
540 m.min = 9 m.s
4 votes
Thanks 6
mallouka2002
Et ça encore STP: http://nosdevoirs.fr/devoir/656216
maudmarine
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Verified answer
Exprimer en m/s, les vitesses suivantes :a) 0.023 km/s
0,023 km = 23 m
Donc :
0,023 km.s = 23 m.s
b) 45 km/h
45 km = 45000 m
1 h = 3600 sec
45000 : 3600 = 12,5 m.s
Donc :
45 km.h = 12,5 m.s
c) 18 km.min∧-1
18 km = 18000 m
1 min = 60 sec
18000 : 60 = 300 m.s
Donc :
18 km.min = 300 m.s
d) 540 m.min∧-1
1 min = 60 sec
540 : 60 = 9 m.s
Donc :
540 m.min = 9 m.s