exercice 4 svp je n arrive pas a appliquer les formules.

1) v = d/t = 360000 / 6058.8 = 59.4 m/s = 214 km/h

2)t = d/v = 15000 / 3.6 = 4166 s = 1h 9m

3) t = d/v = 680000 / 100 = 6800 s = 1 h 53 m 

8 h 53 + 1 h 53 = 10 h 46 m

Il arrivera a toulouse a 10 h 46

bonjour

1/
vitesse = distance /temps

1h41 mn donc tu dois transfomer les mn en heure donc41 mn = 41/60 = 0.6833
donc1h41 mn = 1,68 heures

vitesse =  310/1.68 = 184.52 km/h
2/

duree = distance /vitesse
duree = 15/13 = 1.1538 h
donc
0.1538 h = 0.1538 x60 =9.228 mn
0.228 *60 = 13 s
donc duree 1h9mn 13s

3/
duree = distence /temps
duree = 680/360
duree = 1.888 h

0.888h = 0.88x60 = 52.8 mn
0.8 mn = 0.8*60 = 48 seconds

donc 8 h53 +1h52mn48 secondes = 10h45mn 48 s