Mechanics 1 Revision Formulae (OCR)

V = U + at

s = vt - 1/2at²

s =  ut + at²     

v²   = u²  + 2as 

s = displacement

ds/dt = v

 v = speed

dv/dt = a

a = acceleration

(integrate)a = v

v =  speed

(integrate)v = s

s =  displacement 

F = ma

where

F is force ( this can be the resultant of two forces in opposite directions)

m is mass

a is acceleration

M₁U₁ + M₂U₂  =  M₁V₁ + M₂V₂

Where 

m is mass

u is speed of particle before collision

v is speed of particle after collision.

F = µR

where

F is limiting friction (always opposing motion)

µ is the coefficient of friction between the object and the plane

R is the normal, or reaction force