Verified answer

bjr

31.5714 m/s

donc tu as

31,5714 m ............... 1 seconde

soit

0,0315714 km ........... 1 seconde

soit

0,0315714 x 3600 ... 1 x 3600 secondes

soit

113,66 km ........... 1 h

Verified answer

Bonjour,

1km=1000m

1h=3600s

31,5714m/s=31,5714:1000*3600km/h=31,5714*3,6km/h=113,65704km/h

Donc 31,5714m/s vaut 113,65704km/h.