10-28-11
Agenda
HOMEWORK CHECK
Place on your desk:
*Calculator & Protractor
*Orange Homework Chart
*Protractor/Angle Packet (graph paper)
 1) The diagonal in a right triangle is
called… hypotenuse
 2) The term used for a vector side of a
right triangle is…
component
1) Warm-Up 5 min
2) Physics Bonus Round
Assessment! 20 min
3) Vocab. Words 10 min
4) Vector fill-in notes 15 min
5) “In the Park” worksheet 15 min
6) Pre-Vector Worksheet I 20
min
Vocab.
1. Equilibrant: the one force that brings the net force to
equal zero. The equilibrant is equal to but opposite the
resultant.
2. Graphical Representation: using a vector diagram to
represent either forces acting on an object or velocity/
acceleration vectors.
Review:
-Vectors requite magnitude (how much) and direction & or
orientation.
-Scalar quantities
Special Case:
If you are ONLY solving for the
equilibrant force, you can use the
Pythagorean Theorem to calculate
the magnitude of the resultant.
**Use only, if 2 sides are known
and direction is NOT needed!
PYTHAGOREAM THEOREM
2
A
+
2
B
=
2
C
C (hypotenuse)
side A
side B
For example:
32 + 42 = C2
?
3
9 + 16 = C2
4
25 = C2
C = √25
C=5
X
F
Y
X and Y are components (vectors)
F is the force that is resolved
Y
V
X
Vector V has components X & Y
DUE TODAY:
• Pre-Vector Notes (KEEP)
“The person lives twice who lives the first life
well.”
Robert Herrick
DUE NEXT CLASS:
• Pre-Vector WS I
• Bring Calculator & Protractor!