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Les forces de la science explications d’étape par étape

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Sous forme de diapositives, incluant des images avec tes textes annotées pour comprendre la matière sur les forces de la science

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2025-02-03




La science au quotidien
105-203-AH
Chapitre 1: Les forces


OBJECTIFS
 Les types de force
 La 1ère loi de Newton
 La 2e loi de Newton
 La 3e loi de Newton
 La pression




LA FORCE
La force est le résultat d’une interaction
entre deux corps.
Unité de la force : Newton (N)




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2025-02-03 19:22




1

, 2025-02-03




REPRÉSENTATION D’UNE FORCE
Une force possède une intensité et une
orientation. On la représente par une flèche
sur un schéma.


F



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2025-02-03 19:22




LES TYPES DE FORCE
LA FORCE GRAVITATIONNELLE
Force d’attraction réciproque des
corps massif entre eux




La force gravitationnelle maintient les planètes en orbite autour du Soleil.
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2025-02-03 19:22




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, 2025-02-03




LES TYPES DE FORCE
LA FORCE GRAVITATIONNELLE
Comment expliquer que les planètes ne
tombent pas sur le Soleil ?
 Si la planète est immobile elle s’écrasera sur le Soleil ;

 Si on met en mouvement la planète et on enlève la force
gravitationnelle, alors la planète s’éloignera du Soleil ;

 Si on combine le mouvement de la planète avec la force
gravitationnelle, alors cela donne un mouvement circulaire.




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2025-02-03 19:22




LES TYPES DE FORCE
LE POIDS
Le poids d’un corps à la surface de la Terre correspond en
fait à la force gravitationnelle que la Terre exerce sur
lui.




6
2025-02-03 19:22




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