# Shared Flashcard Set

## Details

Physics equations
yr 11
25
Physics
01/06/2013

Term
 Average speed
Definition
 Speed = distance/time
Term
 Acceleration
Definition
 Acceleration = change in velocity/time takena = v-u/t
Term
 Force
Definition
 Force = mass x accelerationF = 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 velocityp = 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 voltageP = I x V
Term
 Energy transferred
Definition
 Energy transferred = current x voltage x timeE = ItV
Term
 Voltage
Definition
 Voltage = current x resistanceV = IR
Term
 Charge
Definition
 Charge = current x timeQ = It
Term
 Wave speed
Definition
 Wave speed = frequency x wavelengthv = f(lamda)
Term
 Frequency
Definition
 Frequency = 1/Time periodf = 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 movedW = Fd
Term
 Potential energy
Definition
 gravitational potential energy = mass × g × height GPE = mgh
Term
 Kinetic energy
Definition
 kinetic energy = 1/2 × mass × speed^2KE = 1/2 × m × v^2
Term
 Power (related to work)
Definition
 Power = work done/time takenP = W/t
Term
 Density
Definition
 Density = mass/volume
Term
 Pressure
Definition
 Pressure = force/areap = 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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