Staar Physics Reference Chart Page 2
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1
2
3
4STA
AR
STAAR PHYSICS
TM
RefeRenCe MATeRIAlS
State of Texas
Assessments of
Academic Readiness
eneRGY AnD MOMenTUM
= 1
1
2
=
2
KE
mv
Kinetic energy
(mass)(velocity)
2
2
(
)
acceleration
=
PE
mgh
Gravitational potential energy
=
(mass)
(height)
due to gravity
g
(
)(
)
2
spring
distance stretched
1
= 1
=
2
Elastic potential energy
PE
kx
constant
or compressed
2
2
elastic
=
Energy
E
Pt
=
(power)(time)
W
KE
Work =
= ∆
change in kinetic energy
ME
KE + PE
Mechanical energy =
=
kinetic energy + potential energy
KE
PE
KE
PE
Law of conservation of energy
+
=
+
i
i
f
f
=
Momentum
p
mv
=
(mass)(velocity)
=
J
F t
m v
=
∆
=
∆
Impulse
(force)(change in time) = (mass)(change in velocity)
m v
m v
m v
m v
+
=
+
Law of conservation of momentum
1 1
2 2
1 1
2 2
i
i
f
f
(
)(
)
change in
specific
=
Q
mc
T
=
∆
Heat gained or lost
(mass)
heat
temperature
p
WAVeS AnD lIGHT
=
v
= λ
f
Velocity
(frequency)(wavelength)
1
1
1
1
1
1
=
=
+
+
Focal length
f
d
d
distance to image
distance to object
i
o
2
Energy =
E
mc
=
2
(mass)(speed of light)
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