AS Physics : Formula Sheet (Unit 1)

Appendix 8

Formulae Students need not memorise formulae for this specication. The formulae below will be supplied in each examination. Any other physics formulae that are required will be provided in the question. Symbols used comply with ASE guidelines (which are based on IUPAP recommendations).

Unit 1 Mechanics

Kinematic equations of motion

v = u + at  s = ut + ½at 2 v 2 = u2 + 2as 2as

Forces

ΣF = ma

g = F/m W = mg

Work and energy

∆W = F ∆s

E k = ½ mv 2 ∆E grav  = mg∆h Materials

Stokes’ law

F = 6πηrv  F =

Hooke’s law

F = k ∆ x 

Density

ρ = m /  /V  V 

Pressure

 p

=

 / A F   A

Young’s modulus

E = σ/ε where E = Stress σ = F/A Strain ε =∆ x/x 

Elastic strain energy

E el  =

Edexcel GCE in Physics

½

Fx 

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Section F

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