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Sagot :

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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