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Physics equations
yr 11
25
Physics
10th Grade
01/06/2013

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Cards

Term
Average speed
Definition
Speed = distance/time
Term
Acceleration
Definition
Acceleration = change in velocity/time taken
a = v-u/t
Term
Force
Definition
Force = mass x acceleration
F = m x a
Term
Weight
Definition
Weight = mass x g (10 on Earth)
W = m x g
Term
Momentum (stopping distance)
Definition
Momentum = mass x velocity
p = m x v
Term
Moment
Definition
Moment = force x perpendicular distance from pivot
Term
Orbital speed
Definition
Orbital speed = 2 x pi x orbital radius/time period
Term
Power
Definition
Power = current x voltage
P = I x V
Term
Energy transferred
Definition
Energy transferred = current x voltage x time
E = ItV
Term
Voltage
Definition
Voltage = current x resistance
V = IR
Term
Charge
Definition
Charge = current x time
Q = It
Term
Wave speed
Definition
Wave speed = frequency x wavelength
v = f(lamda)
Term
Frequency
Definition
Frequency = 1/Time period
f = 1/T (and T = 1/f)
Term
Refractive index (n)
Definition
n = sini/sinr
Term
Critical angle
Definition
sinc = 1/n
Term
Efficiency
Definition
Efficiency = useful energy output/total energy input
Term
Work
Definition
Work done = force x distance moved
W = Fd
Term
Potential energy
Definition
gravitational potential energy = mass × g × height
GPE = mgh
Term
Kinetic energy
Definition
kinetic energy = 1/2 × mass × speed^2
KE = 1/2 × m × v^2
Term
Power (related to work)
Definition
Power = work done/time taken
P = W/t
Term
Density
Definition
Density = mass/volume
Term
Pressure
Definition
Pressure = force/area
p = F/A
Term
Pressure difference
Definition
Pressure difference = height × density × g
Term
Pressure and Kelvin temperature
Definition
p1/T1 = p2/T2
Term
Pressure and volume of a fixed mass of gas
Definition
p1V1 = p2V2
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