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20 Cards in this Set
- Front
- Back
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What's relationship between average speed, distance and time
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average speed = distance moved / time taken
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What's relationship between force, mass and acceleration?
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force = mass x acceleration
acceleration = change in velocity / time taken |
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What's the formula for momentum?
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momentum = mass x velocity
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formula for density, mass, volume
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density = mass/ volume
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force, distance and work
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work done = force x distance moved
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energy transferred
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energy transferred = work done
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Kinetic energy
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kinetic energy = 1/2 x mass x speed square
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GPE
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mass x g x height
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weight formula
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weight = mass x grav field strength
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pressure formula
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pressure = force / area
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moment formula
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moment = force x perpendicular distance from pivot
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Charge
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charge = current x time
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voltage
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voltage = current x resistance
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electrical power
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electrical power = voltage x current
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Wave speed
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wave speed = frequency x wavelength
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Refractive index
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n = sin i / sin r
angle of incidence / angle refraction |
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Critical angle
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Sin C = 1 / n
n = refractive index of material |
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Efficiency
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useful energy output / total energy output
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Pressure difference
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pressure diff = height x density x g
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Input power = output power
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VpIp = VsIs for 100% efficiency
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