Réponses

  • Utilisateur Brainly
2012-06-12T18:43:02+02:00
Meilleure réponse !
2012-06-12T19:53:46+02:00

80km/h en m/s c'est :

 

1km = 1x1000m

donc 80km = 80x1000 = 80000m

 

1h = 60min = 60x60s = 3600s

 

donc 80km/h = 80000/3600m/s = 800/36m/s = 200/9 m/s = 22,2222222222..m/s