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Physics 204A Equation Sheet for Final Exam
Laws, Principles, Useful Relationships, and Other Information
Definition of Velocity:
r
v
!
d
r
r
dt
Definition of Acceleration:
r
a
!
d
r
v
dt
Centripetal Acceleration:
a
c
=
v
2
r
Kinematic Eq’s:
v
=
v
o
+
at
x
=
x
o
+
v
o
t
+
1
2
at
2
v
2
=
v
o
2
+
2a(x
!
x
o
)
x
!
x
o
=
1
2
(v
+
v
o
)t
Newton's Second Law
!
r
F
ext
=
m
r
a
cm
or
!
r
F
=
d
r
p
dt
Mass/weight Rule
F
g
=
mg
Def’n of Coef. of Friction
μ
!
F
fr
F
n
Definition of Work
W
!
r
F
•
d
r
s
"
Def’n of Kinetic Energy
K
!
1
2
mv
2
WorkEnergy Theorem
W
net
=
!
K
Definition of Power
P
!
dW
dt
Law of Cons. of Energy
!
K
+
!
U
=
W
nc
Def’n of Potential Energy
!
U
" #
W
c
Gravitational P.E.
U
g
=
mgy
Spring Potential Energy
U
s
=
1
2
kx
2
Def’n of Center of Mass
r
r
cm
!
r
r dm
"
M
Def’n of Linear Momentum
r
p
!
m
r
v
Def’n of Impulse
r
J
!
r
F dt
t
o
t
"
ImpulseMomentum Theorem
!
r
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 Fall '09
 Kagan
 Acceleration

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