Unit 0 - Grade 11 Review

Unit 0 - Physics Notes

, -
Physics Metrics -



•
Mechanics is the study of motion
-
Fundamental Units
-


Distance -


Mass
-

Time
-


Speed , velocity ,
ad acceleration are Not fundamental quantities
Symbolic
•
A symbol represents the quantity in a chart or equation ( ex .
E -
- mo )
•

Symbols stand done , they don't need a number
-
E -
-



energy
-

m =
Mass -

c =
speed of light
Units
.
A unit is placed after a measured number
Physics uses Mks system of S1 units CMKS-metersikilogrznsiseconc.IS#
•




/¥sFIIIY/s4Ybd/Mmke¥nit/u#Abbma
k9
Timeless

Derivedquantitieso
Derived quantities are calculated from two or more fundamental ones

Derived HAS units are combination of two more fundamental units Cmtkgs)
•
a or




QFtyformuaorcacuah.it#=dtms/:o::::./n:::i:n/:mi
Accelerations
F=Z

, →




#xAbbrevi#Xampedstae)
#0O000m

/




cm
M0mm
0000M
Dimensionalttndysis
.


steps :


1) Identify starting ad ending units
2) Line up conversion factors so units divide out
3) Multiply 211 top numbers and divide by each bottom number

4) Check units and answer

Example
•
:


?
-
A car is
driving 88km/h .
How fast is this in Mts


88ft -
110,807
-
/
both Items
-
= 24 mis


-


A piece of wire is 1.3M long . How many 1.5cm pieces can be cut from
this wire ?

1-3*1 109mF I
!F = 86 pieces

Unitsiconversions
.

Example :




V -
-
10km/h → Mls


19¥02 xfohtm.mx iffy = 278 mis


840k Nlm → N 1cm

x
10£81 xtohfm 8400N 1cm
84,0ft =




.
Practice :


a) 1kg
=

1000g d) 1$ =
100C $ g) IL
-
- 100cL
b) IS =
to ds e) 10dg Ig =
h) Im = I 000mm

c) 1000mL L f ) 1000000000=1 Ms i)
I
1000000mg Ig
= =