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La représentation graphique du MRUA
Domaine Science Sous domaine Physique, Technologie et TIC
Section Technique Option Mécanique
Discipline Mecanique Classe 3ème
Matériel didactique Tableau noir,craies blanches Auteur SCHOOLAP.COM
Objectif opérationnel A l’issue de la leçon, les élèves seront capables de représenter a, Vt et et sur le diagramme
Réference Mécanique général R.THIBAUT, A. ATOURNAY
Activité initiale

Rappel

Donner l’équation générale de l’espace parcouru en MRUA

Rappel

Motivation

Quelles sont les grandeurs qu’on représente sur le diagramme

Motivation

Nous représentons l’accélération, la vitesse  et l’espace en fonction du temps

Annonce du sujet

Qu'allons nous étudier aujourd'hui

Annonce du sujet

Aujourd'hui nous allons étudier la représentation  graphique du MRUA

 

Activité principale

Développement

La représentation du MRUA

Diagramme des accélérations : elle est toujours constante et représentée par une droite parallèle à l’axe des temps (abscisses)

Exemple : a=2m/S2

Diagramme des vitesses

Synthèse

Quelles sont les grandeurs qu’on représente sur le diagramme

Nous représentons l’accélération, la vitesse  et l’espace en fonction du temps

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