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résumé examen mécanique
- Course
- Physique mécanique
- Institution
- Collège Jean-de-Brébeuf ( )
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Chapitre d2.1 Scalaire et vecteur
11A11 = com 11-All=6m 2A=17m
-
OF 300 =
O-A 210 =
7300
2.2 Addition etconstraction
.
Addition:commutatif
·
Sonstraction:pas commutatif
2.3 composants de vecteurs etvecteurs unitaires
N
Ax:A cOSOA A X (i +) 180 -0(+,+)
tattome
=
=
0
=
A sin OA Or=
Ay=
(i) 18040
=
(+,t 360 0
= -
unitaire:
S
recter
Chapitre 3
3.2 Déplacementetvitesse
·Déplacement:1x=xf -
xi (m)
=
Vecteur (tett
recteur (+ ett
Umoy 1 (m1S) =>
=
·Us.
moy= Eitpar. (mis) => Scalaire ()
3.4 Acceleration
·amoy (mis2)
=
·a ou
+ -:
dépend de système d'axe
·déctivation on acceleration:dépend de la norme de la vitesse
Aire
3.5 sous la courbe
inst
Vx
(m15) ox estdonnepar Faire sous a ·AVx ax.
=
At
VX
·
"*
courbe de Ux en fonction du temps
·Ax Vx. At
=
Bt T(S) ↑(s)
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