Bulletin Board
How many of you have e

devices that you can put apps
on?
Example: Stop watch, Accelerometer, ...
Readings
Pages 4

8 in
your textbook
Motion
Mechanics
The field of physics in which we study the motion of objects.
Kinematics
Explaining the “what” and the “how” of motion.
Kinematics
10 Km
5 Kg
29 seconds
“math is the language of physics”
~Mr. West
Map of NTCS
office
s
tairs
stairs
We are
here:
Map of NTCS
office
s
tairs
stairs
Start
here:
Use the tiles
on the floor.
Map of NTCS
office
s
tairs
stairs
Origin
Map of NTCS
0
s
tairs
stairs
Origin
Map of NTCS
0
20 M
s
tairs
stairs
Map of NTCS
0
20 M
[N]
s
tairs
stairs
Map of NTCS
0
20 M
[N]
Vector
Map of NTCS
0
20 M
Scalar
When would we want to use a scalar and when would we
want to use a vector?
Scalar
VS
Vector
Vector Application
chrome.angrybirds.com
Example of a scalar and a vector.
Distance
VS
Displacement
Distance
The length of the path taken from one point to another.
Displacement
The change in position of an object.
Tools to measure distance and displacement.
Pedometer
VS
Measuring Tape
Δ
= “change in”
Displacement is the
Δ
position.
Displacement is written
Δ
d
Δ
d = 20 m [N]
Δ
d = 20 m [NE]
+

North
South
East
West
Up
Down
Δ
d = 20 m [N]
Δ
d = + 20 m
What if I wanted to drive from
ntcs
to the
Yorkdale
mall?

14 Km
Δ
d =
d
f

d
i
Δ
d = (

14)

0
What if I wanted to drive from Scarborough to the
Yorkdale
mall?

14 Km
+8 Km
Δ
d =
(

14)
–
(+8)
=

22
Δ
d =
(

14)
–
(+8)
=

22
What does this
value mean?
Will the value of our distance (scalar: magnitude)
always be the same as the magnitude of our
displacement (vector: magnitude plus direction) in
one direction?
Yes
–
A
No
–
B
Will the value of our distance (scalar: magnitude)
always be the same as the magnitude of our
displacement (vector: magnitude plus direction) in
one direction?
Yes
–
A
No
–
B
A stone is thrown vertically upward from the
roof of a building. Does the position of the
stone depend on the location chosen for the
origin?
A stone is thrown vertically upward from the
roof of a building. Does its displacement
from where it started depend on the location
chosen for the origin?
Which of the following statements about distance,
displacement, and position are always true?
a)
The displacement of an object is the length of path travelled.
b)
The distance travelled by an object is equal to its change in position.
c)
The position of an object is exactly the same as its displacement.
d)
The distance an object travels can be less than its displacement.
Which of the following statements about distance,
displacement, and position are always true?
a)
The displacement of an object is the length of path travelled.
b)
The distance travelled by an object is equal to its change in position.
c)
The position of an object is exactly the same as its displacement.
d)
The distance an object travels can be less than its displacement.
None are true.. In A & B, switch distance/displacement. C is only true if you
start from the origin. For D, displacement could be negative.
Explain why you get the same resultant displacement if
two displacements are added in the reverse order.
Include diagrams to support your answer.
What is the difference between adding scalar
quantities and adding non

collinear vector
quantities? Include an example.
With your group, create your own question
about displacement and record it in your
group workbook. Be sure to include an
answer.
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