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LEAFE

Bonjour,

Exercice 10:

1)

v = 1 mm/s = 0,001 m/s

t = 1h = 3600 s

d = v x t = 0,001 x 3600 = 3,6 m

2)

v = 5 km/h = 1,38 m/s

t = 1h = 3600 s

d = 1,38 x 3600 = 4968 m = 4,9 km ≈ 5 km

3) 4968 / 3,6 = 1380

Le piéton va 1380 fois plus vite que l'escargot.

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