2019-20 N. American Planner_DP Sample
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
USEFUL INFORMATION<br />
MATHEMATICAL LAWS, FORMULAE, SYMBOLS<br />
FORMULA VARIABLES UNITS FORMULA VARIABLES UNITS<br />
d = ut + 1 at 2<br />
2<br />
d – distance<br />
u – initial velocity<br />
a – acceleration<br />
t – time<br />
m. metres<br />
m/s<br />
m/s 2<br />
s, seconds<br />
P = VI<br />
P – Power<br />
V – Voltage<br />
I – Current<br />
w, watts<br />
v, volts<br />
A, amps<br />
d = vt<br />
d – distance<br />
v – average velocity<br />
t – time<br />
m, metres<br />
m/s<br />
s, seconds<br />
W = Vlt<br />
W – electrical energy<br />
V – Voltage<br />
I – current<br />
t – time<br />
J<br />
V<br />
A<br />
s<br />
v = u + at<br />
v – final velocity<br />
u – initial velocity<br />
a – acceleration<br />
t – time<br />
m/s<br />
m/s<br />
m/s 2<br />
s, seconds<br />
l = Q t<br />
I – current<br />
Q – electric charge<br />
t – time<br />
A<br />
C, Coulombs<br />
s<br />
v 2 = u 2 + 2ad<br />
v – final velocity<br />
u – initial velocity<br />
a – acceleration<br />
d – distance<br />
displacement<br />
m/s<br />
m/s<br />
m/s 2<br />
m<br />
V = IR<br />
(ohm’s law)<br />
V – Voltage<br />
I – current<br />
R – resistance<br />
V<br />
A<br />
O, ohms<br />
a = v - u<br />
t<br />
a – acceleration<br />
v – final velocity<br />
u – initial velocity<br />
t – time<br />
m/s 2<br />
m/s<br />
m/s<br />
m<br />
V = W Q<br />
V – potential difference<br />
W – work<br />
Q – electric charge<br />
V<br />
J<br />
C<br />
F = ma<br />
F – resultant force<br />
m – mass<br />
a – acceleration<br />
N, Newtons<br />
kg, kilograms<br />
m/s 2<br />
P = W t<br />
P – Power<br />
w – work<br />
t – time<br />
W<br />
J<br />
s<br />
Fg = Gm1m2<br />
r 2<br />
Fg – gravitational force<br />
G – universal gravitational<br />
constant 6.67 x 10 -11<br />
m1m2 – masses of 2 objects<br />
r – distance objects apart<br />
m/s<br />
m/s<br />
kg<br />
m<br />
E k<br />
= 1 mv 2<br />
2<br />
E k<br />
– kinetic energy<br />
m – mass<br />
v – velocity<br />
J<br />
kg<br />
m/s<br />
d = m v<br />
D – density<br />
m – mass<br />
V – volume<br />
kg/m 3<br />
kg<br />
m 3<br />
E p = mgh<br />
E p – potential energy<br />
m – mass<br />
g – gravitational field strength<br />
h – height<br />
J<br />
kg<br />
N/kg<br />
m<br />
P = mv<br />
P – momentum<br />
m – mass<br />
v – velocity<br />
kg m/s<br />
kg<br />
m/s<br />
F e<br />
= kQ 1 Q 2<br />
r 2<br />
F e – electrical force<br />
k – Coulomb’s constant 9x10 9<br />
Q 1<br />
Q 2<br />
– electrical charges<br />
r – distance charges apart<br />
N<br />
N/m 2 /c 2<br />
c<br />
m<br />
W = Fd<br />
W – work<br />
F – force<br />
d – distance<br />
J, joules<br />
N<br />
m<br />
H = CmDT<br />
H – heat energy<br />
c – specific heat<br />
m – mass<br />
DT – change in temperature<br />
J<br />
J/kg ºC<br />
kg<br />
ºC, celsius<br />
F = -kd<br />
(Hooke’s Law)<br />
F – restoring Force<br />
k – spring constant<br />
d – spring’s displacement<br />
from natural length<br />
N<br />
-<br />
m<br />
157<br />
<strong>20</strong>18/19 Intl <strong>Planner</strong>_<strong>DP</strong>_REAR.indd 157 25/5/18 3:15 pm