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Patinage84
@Patinage84
May 2019
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Bonjour vous pouvez m'aidé a cette exercice s'il vous plais je n'y arrive pas
Merci d'avance
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MonsieurFirdown
Verified answer
Bonjour
♧1. (Conversion)
1357 km/h = 1357/3,6 = 376,9 m/s donc il a atteint son objectif car 376,9 > 340
♧2. Sachant que v = d /t on a donc :
v = d/t = 36259/259 = 140m/s d'où 140×3,6 = 504 km/h
Voilà ^^
2 votes
Thanks 2
Patinage84
Merciiiii beaucoup
MonsieurFirdown
^^
marco31
Bonsoir
1/ 1357,6/3,6=377,11 m/s Donc il a bien atteint son objectif ,dépasser la vitesse du son de 340m/s
2/ vitesse moyenne
4mn 19 s ⇒259 seconde
36529/259=141,04 m/s
1 votes
Thanks 0
Patinage84
Merciiii beaucoup ^^
marco31
Mais de rien
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Verified answer
Bonjour♧1. (Conversion)
1357 km/h = 1357/3,6 = 376,9 m/s donc il a atteint son objectif car 376,9 > 340
♧2. Sachant que v = d /t on a donc :
v = d/t = 36259/259 = 140m/s d'où 140×3,6 = 504 km/h
Voilà ^^
1/ 1357,6/3,6=377,11 m/s Donc il a bien atteint son objectif ,dépasser la vitesse du son de 340m/s
2/ vitesse moyenne
4mn 19 s ⇒259 seconde
36529/259=141,04 m/s