Explications:
Ec= 1/2 × m× V°
NB :(°) signifie au carré
Ec= 1/2 × 80× (15×15)
Ec = 9000 J
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Explications:
Ec= 1/2 × m× V°
NB :(°) signifie au carré
Ec= 1/2 × 80× (15×15)
Ec = 9000 J