Réponse :
ex 1
300000km/s = 1080000km/h
ex3
340m/s = 1224km/h
ex 2
on sais que v=d/t
1h 30min= 3600+1800
=5400s
cad v=150/5400
=0.02km/s
Explications :
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Réponse :
ex 1
300000km/s = 1080000km/h
ex3
340m/s = 1224km/h
ex 2
on sais que v=d/t
1h 30min= 3600+1800
=5400s
cad v=150/5400
=0.02km/s
Explications :