Physics Equations and Units Flashcards
What is the formula for kinetic energy?
Ek = 1/2mv²
Ek = Kinetic Energy - J m = Mass - Kg v = Speed - m/s
What is the formula for Elastic Potential Energy
Ee = 1/2ke²
Ee = Elastic Potential Energy - J k = Spring Constant - N/m e = Extension - m
Formula linking Gravitational Potential Energy, Mass, Gravitational Field Strength, and Height?
Ep = mgh
Ep = Gravitational Potential Energy - J m = Mass - Kg g = Gravitational Field Strength - N/kg h = Height - m
(GFS on Earth is 9.81N/kg)
Formula linking Change in Thermal Energy
∆E = mc∆(Theta)
∆E = Change in Thermal Energy - J m = Mass - Kg c = Specific Heat Capacity - J/kg°C ∆(Theta) = Change in Temperature - °C
What is the formula for Power?
P = E/T
P = Power - W (Watts) E = Energy - J T = Time - S
What is another formula for power linked with work done?
P = W/T
P = Power - W (Watts) W = Work Done -J T = Time - S
Formula linking Power, Potential Difference, and Current?
P = VI
P = Power - W V = Potential Difference - V I = Current - A
Formula linking Power, Current, and Resistance?
P = I²R
P = Power - W I = Current - A R = Resistance - Ohms
Formula linking Energy, Power, and Time?
E = PT
E = Energy - J P = Power - W T = Time - s
Formula linking Efficiency, Useful Energy Out, and Total Energy In?
Efficiency = Useful Energy Out / Total Energy In
Formula linking Charge, Current, and Time?
Q = IT
Q = Charge - C (Coulombs) I = Current - A T = Time - S
Formula linking Potential Difference, Resistance, and Current?
V = IR
V = Potential Difference - V I = Current - A R = Resistance - Ohms
Formula linking Energy, Charge, and Potential Difference?
E = QV
E = Energy - J Q = Charge - C (Coulombs) V = Potential Difference - V
Formula linking Density, Mass, and Volume?
P = m/v
P = Density - kg/m³ OR g/dm³ OR g/cm³ m = Mass - kg OR g v = Volume - m³ OR dm³ OR cm³
Formula linking Energy, Mass, and Specific Latent Heat?
E = mL
E = Energy - J m = Mass - kg L = Specific Latent Heat - J/kg
Formula linking Weight, Mass, and Gravitational Field Strength?
W = mg
W = Weight - N
m = Mass - kg
g - GFS - N/Kg
Formula linking Work Done, Force, and Distance?
W = Fs
W = Work Done - J F = Force - N s = Distance - m
Formula linking Force Spring Constant, and Extension?
F = Ke
F = Force - N K = Spring Constant - N/m e = Extension - m
Formula linking Distance, Speed, and Time?
S = VT
S = Distance - m V = Speed - m/s T = Time - s
Formula linking Acceleration, ∆Velocity, and Time?
a = ∆V / T
a = Acceleration - m/s² ∆v = Change in Velocity - m/s t = Time - s
Formula linking Final Velocity, Initial Velocity, Acceleration, and Distance?
v² - u² = 2as
v = Final Velocity - m/s u = Initial Velocity - m/s a = Acceleration - m/s² s = Distance - m
Formula linking Force, Mass, and Acceleration?
F = Ma
F = Force - N M = Mass - kg a = Acceleration - m/s²
Formula linking Momentum, Mass, and Velocity?
P = mv
P = Momentum - kg m/s m = Mass - kg v = Velocity - m/s
Formula linking Period and Frequency?
Period = 1 / Frequency
Period - S
Frequency - Hz
