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Sagot :

MBOUAMACKPIERREACHIL

Réponse:

1-) 300000×2=600000km

2-) V2=140km/h=38,88m/s on sait que v=d/t d'où d=v×t=38,88×2=77,78m=0,07778km

3-)d1>d2

4-) t=8min20s=8×60+20=500s

5-) v=300000km/s=300000000m/s et d=v×t=300000000×500=150milliards de mètre=150millions de km

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