# Formulae and Relationships

What is the relationship between average speed, distance and time
Average speed = distance / time
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What is the relationship between acceleration and change in velocity?
Acceleration = change in velocity / time
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What is the relationship between force, mass and acceleration?
Force = mass * acceleration
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What is the relationship between momentum, mass and velocity?
Momentum = mass * velocity
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What is the relationship between density, mass, and volume?
Density = mass / volume
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What is the relationship between energy transferred and efficiency?
Efficiency = useful energy output (from system) / total energy input (to system)
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What is the relationship between force, distance and work?
Work done = force * distance moved (in the direction of force)
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What is the relationship between energy tranfer and work?
Energy transferred = work done
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What is the relationship between kinetic energy, mass and speed?
Kinetic energy = 1/2 * mass * speed^2
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What is the relationship between gravitational potential energy, mass, gravitational field stength and height?
GPE = mass * GFS * change in height
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What is the relationship between mass, wieght and GFS
Weight = mass * GFS
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What is the relationship between applied force, pressure and area over which it acts?
Pressure = force / area
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What is the relationship between moment of a force and distance from pivot?
Moment = force * perpendicular distance from pivot
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What is the relationship between power put into tranformer and the power it produces?
Input power = output power
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What is the relationship between wavespeed, frequency and wavelength?
Wavespeed = frequency * wavelength
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What is the relationship between charge, current and time?
Charge = current * time
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What is the relationship between voltage, current and resistance?
Voltage = current * resistance
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What is the relationship between electrical power, current and voltage?
Electrical power = voltage * current
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What is the relationship between voltage and turns in a transformer?
Input voltage / output voltage = primary turns / secondary turns
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What is the relationship between angle of incidence and refraction and refractive index?
n = sin i / sin r
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What is the relationship between refractive index and the critical angle?
sin c = 1 / n
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What is the equation for pressure difference?
Pressure difference = height * density * G
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## Other cards in this set

### Card 2

#### Front

What is the relationship between acceleration and change in velocity?

#### Back

Acceleration = change in velocity / time

### Card 3

#### Front

What is the relationship between force, mass and acceleration?

### Card 4

#### Front

What is the relationship between momentum, mass and velocity?

### Card 5

#### Front

What is the relationship between density, mass, and volume?