1. Who am I?

2. FUNCAU!

3. Formula
Frenzy
Atoms and Matter
Lesson 3

4. Learning Intention
 To
learn to recognise and manipulate
formulas

5. Using Symbols
 When
quantities are put into formulas as unknowns
we give them a symbol. We use the same symbol
to keep track of what we are doing.
 Some are easier to remember than others…
quantity
symbol
quantity
symbol
Distance
d
Charge
Q
Time
t
Current
I
Speed
v
Voltage
V
Displacement
s
Power
P
Velocity
v
acceleration
a

6. formulas
quantity
symbol
Distance
d
Time
t
v
s
Speed
Displacement
Velocity
acceleration
 In
formulas we replace
the quantity with the
symbol
v
a
d
vxt

7. formulas
quantity
symbol
Distance
d
Time
t
v
s
Speed
Displacement
Velocity
acceleration
Initial velocity
Final velocity
v
a
u
v
In these
formulas a is the
subject
The symbol Δ (delta) means “change of”
d
vxt

8. Worked example
1.
If a sprinter reaches 12 m/s in 3 seconds what is
his acceleration?
V=12m/s
U=0 m/s
t= 3 s
a = ?
a= 12 – 0
3
a = 4 m/s/s
= 4 m/s2
What about me?

9. For Formula Questions always
follow FUNCAU
F – write formula
U – write down the
units
N – sub in the
numbers
C – do the
calculations
A- write answer
U – add the units

10. Formulas
Lets change the subject
What
techniques
and skills do I
need?
• To “read” it. These
are not just
numbers they
mean something.
• What techniques
can we use to
“read” it?

11. Formulas
Lets change the subject
What
techniques
and skills do I
need?
• Understand order
of operations
• BODMAS
• BOMDAS
• BEDMAS
• WHATEVER

12. Formulas
Lets change the subject to u

13. A
car is travelling at
10m/s and
increases to 20m/s
in 4 seconds what
is it’s acceleration?
 If
that acceleration
continues what will
it’s speed be 3
seconds later?
 Use
E=mcΔT
to work out the
energy required to
raise the
temperature of 2kg
of water by 10oC.
Cwater = 4200 J/kgoC
How much water
could you boil if you
used 10kJ?