Réponse :
Bonjour
Explications :
1)
V(m/s) = d(m)/t(s)
V = 100/9.58
V ~10.4 m/s
V ~ 10.4 * 3.6
V ~ 37.5 km/h
2)
t = d/v
t = 10/50
t = 0.2 h
t = 0.2 * 60
t = 12min
3) 20min /60 = 1/3h
D = v * t
D = 300 * 1/3
D = 300/3
D = 100km
