Réponse :
Bonjour
Explications étape par étape
4) 30min/60 = 0.5h
V(km/h) = d(km)/t(h)
V = 275/2.5
V = 110km/h
12)
V(m/s) = d(m)/t(s)
V = 150/5
V = 30m/s
13) 1/4h = 0.25h
V = 15/0.25
V = 60km/h
40)
A) V = 14/2.5
V = 5.6km/h
B)45min/60 = 0.75h
D(km) = v(km/h) * t(h)
D = 5.6 * 1.75
D = 9.8 km
43)
V = 519/24
V = 21.625 km/h (~22km/h arrondi à l'unité près)
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Réponse :
Bonjour
Explications étape par étape
4) 30min/60 = 0.5h
V(km/h) = d(km)/t(h)
V = 275/2.5
V = 110km/h
12)
V(m/s) = d(m)/t(s)
V = 150/5
V = 30m/s
13) 1/4h = 0.25h
V = 15/0.25
V = 60km/h
40)
A) V = 14/2.5
V = 5.6km/h
B)45min/60 = 0.75h
D(km) = v(km/h) * t(h)
D = 5.6 * 1.75
D = 9.8 km
43)
V = 519/24
V = 21.625 km/h (~22km/h arrondi à l'unité près)