Réponse :
bonjour
120 s = 160 cm
3 600 s = 4 800 cm
160 : 120 = 1.33....
vitesse = 1.33 cm / s
= 0.0133 m / s
2 ) 60 : 4 = 15
15 km /h
15 000 : 3 600 = 4.17 m /s
3 ) 300 : 100 = 3
3 h
4) 240 m/s = 0.24 x 3 600 = 864 km / h
340 : 864 = environ 0.39 h = 23 min 24 s
Explications :
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Réponse :
bonjour
120 s = 160 cm
3 600 s = 4 800 cm
160 : 120 = 1.33....
vitesse = 1.33 cm / s
= 0.0133 m / s
2 ) 60 : 4 = 15
15 km /h
15 000 : 3 600 = 4.17 m /s
3 ) 300 : 100 = 3
3 h
4) 240 m/s = 0.24 x 3 600 = 864 km / h
340 : 864 = environ 0.39 h = 23 min 24 s
Explications :