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April 2019
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Un motard roule à la vitesse v = 90 km/h. Sa moto et lui ont une masse globale m = 300 kg.
1. Exprimer sa vitesse en m/s.
2. Calculez son énergie cinétique
(niveau 3ème)
C'est les seules indications que j'ai eues, sinon dans le cours on avait écrit: Energie cinétique = 1/2 m x v x v
Je n'y arrive vraiment pas :/
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Thim2000
Question 1:
25m/s
question 2:
93750
2 votes
Thanks 1
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Lista de comentários
25m/s
question 2:
93750