Key Equations

Magnitude of static friction	$f_{s} \leq μ_{s} N$
Magnitude of kinetic friction	$f_{k} = μ_{k} N$
Centripetal force	$F_{c} = m \frac{v^{2}}{r} or F_{c} = m r ω^{2}$
Ideal angle of a banked curve	$tan θ = \frac{v^{2}}{r g}$
Drag force	$F_{D} = \frac{1}{2} C ρ A v^{2}$
Stokes’ law	$F_{s} = 6 π r η v$