AP Physics B Formulas
Courtesy Emily Gilbert, AP Physics C 2011-12
____________
average velocity
m/s
____________
acceleration
m/s2
____________
final velocity
m/s
____________
displacement
m
____________
displacement
m
____________
final velocity squared
(m/s)2
Newton’s Second Law (net force )
N
____________
frictional force
N
____________
work
J
____________
1
kinetic energy
J
work-kinetic energy theorem
J
____________
gravitational potential energy
J
____________
power
W
____________
power
W
____________
momentum
kg·m/s
____________
impulse
N·s or
kg·m/s
____________
peed for uniform circular motion
____________
centripetal force
____________
torque
____________
____________
2
m/s
N
N·m
____________
Hooke’s law
N
____________
elastic potential energy
J
____________
period of a pendulum
s
____________
period of a spring
s
____________
Newton’s universal law of
gravitation
N
____________
speed of a satellite
____________
pressure
Pa, N/m2
____________
absolute pressure
Pa, N/m2
____________
Pascal’s principle
____________
buoyant force
3
m/s
N
____________
____________
equation of continuity
Bernoulli’s equation
____________
ideal gas law
____________
combined gas law
____________
average kinetic energy of a gas
molecule
____________
root mean square velocity
____________
heat flow by conduction
J
____________
first law of thermodynamics
J
____________
work done on/by a gas
J
____________
efficiency of a heat engine
4
J
m/s
____________
efficiency of a heat engine
____________
efficiency of a Carnot engine
____________
Coulomb's law; electrical force
____________
electrical field strength
N/C
____________
electrical field strength of a point
charge
N/C
____________
Electric potential energy in a
uniform field
J
____________
electrical potential
V
____________
electrical potential of a point charge
V
____________
electrical potential energy between
two point charges
J
____________
capacitance
F
5
N
____________
electrical potential energy for a
capacitor
J
____________
electrical potential energy for a
capacitor
J
____________
electric potential in a uniform field
V
____________
current
A
____________
Ohm’s law
Ω
____________
resistance in terms of resistivity
Ω
____________
electrical power
W
____________
electrical power
W
____________
electrical power
W
____________
equivalent resistance for resistors in
series
Ω
6
____________
equivalent resistance for resistors in
parallel
Ω
____________
equivalent capacitance for
capacitors in parallel
F
____________
equivalent capacitance for
capacitors in series
F
____________
force on a charged particle moving
in a magnetic field
N
____________
force on a current carrying wire in a
magnetic field
N
____________
magnetic field strength at a given
distance from a current carrying
wire
T
____________
motional EMF
V
____________
magnetic flux
Wb or
T·m2
____________
Faraday’s law for electromagnetic
induction
____________
speed of a wave
7
V
m/s
W/m2
____________
intensity of sound
____________
index of refraction
____________
Snell’s law
____________
critical angle
____________
mirror/lens equation
____________
magnification
____________
Young’s equation for double slit
interference (constructive)
____________
Young’s equation for double slit
interference (destructive)
____________
distance from central bright band to
an ordered fringe
m
____________
energy of a photon
J
8
degrees
____________
photoelectric effect
J
____________
DeBroglie wavelength
m
____________
mass energy equivalence
J
____________
retarding/stopping potential
V
9