Physics with Technology
Test #6961
Useful Equations, Units, & Values
Sav = Δd Sav = average speed
Δt d = distance
t = time
vav = Δd vav = average velocity
Δt d = displacement
t = time
aav = Δv aav = average acceleration
Δt v = velocity
t = time
F = ma F = net force
m = mass
a = acceleration
W = mg W = weight
m = mass
g = acceleration due to
gravity
W = Fd W = work
F = force
d = displacement
p = mv p = Momentum
m = mass
v = velocity
KE = ½ m v2 KE = Kinetic Energy
m = mass
v = velocity
PE = mgh PE = Gravitational Potential
Energy
m = mass
g = gravitational acceleration
h = height
PEel = ½ k x2 PEel = Elastic Potential Energy
k = spring constant
x = spring displacement
k = F k = spring constant
x F = force
x = displacement
%E = Wout100 %E = Efficiency
Win Wout = work output
Win = work input
Q = mc ΔT Q = Heat transferred
m = mass
c = specific heat
T = temperature
= Q = Heat flow rate
Δt Q = Heat transferred
t = time
f = 1 T = Period of time
T f = frequency
f = n f = frequency
Δt n = number of cycles
t = time
V = IR V = voltage
I = current
R = resistance
P = IV P = power
I = current
V = voltage
a2 + b2 = c2
Quantity
Unit (abbreviation)
Current
ampere (A)
Efficiency
percentage (%)
Energy
joule (J)
Force
newton (N)
Frequency
hertz (Hz)
Heat
calorie (cal)
Length
meter (m)
Mass
kilogram (kg)
Power
watt (W)
Resistance
ohms (Ω)
Temperature
degrees Celsius (ºC)
Time
seconds (s)
Voltage
volts (V)
Work
joule (J)
g = 9.8 m/s2 (on Earth)
Δ = difference or change in
c
b
a