AQA Physics Unit 2

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Newtons First Law
The velocity of an object will not change unless a resultant force acts on it
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Newtons Second Law
F=ma
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Newtons Third Law
If an object A exerts a force on object B, then object B exerts an equal but opposite force on object A
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Scalar
Distance,Speed,Mass
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Vector
Displacement,Velocity,Acceleration
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Hooke's Law
The extension is proportional to the force applied as long as the limit of proportionality not exeeded
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Young's Modulus
Stiffness constant of a material
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Longitudinal Waves
The parts of the wave oscillate parallel to the direction of travel
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Transverse Waves
The parts of the wave oscillate perpendicular tot he direction of travel
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Stationary Waves
A wave reflects to make two waves travelling in opposite directions with similar amplitude and frequency to superpose to make a stationary wave with nodes and anti nodes
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Monochromatic
Single wavelength
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Coherent
Same frequency/wavelength and a constant phase relationship
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Diffraction
Spreading out of a wave when passed through a slit of around an obsical
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Principle Of Superpossition
The resultant displacement caused by 2 waves is the sum of the 2 displacements caused by each waves at that instant
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Node
Point of zero displacement with no amplitude
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Anti Node
Point of maximum displacement and amplitude
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Other cards in this set

Card 2

Front

F=ma

Back

Newtons Second Law

Card 3

Front

If an object A exerts a force on object B, then object B exerts an equal but opposite force on object A

Back

Preview of the back of card 3

Card 4

Front

Distance,Speed,Mass

Back

Preview of the back of card 4

Card 5

Front

Displacement,Velocity,Acceleration

Back

Preview of the back of card 5
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