A car coasting with rolling drag and air drag

seanwfd
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Homework Statement


Drag=m(Mu*g+(V^2)/L)
L=constant with unit of length
initialV=V_0
how far the car will coast under this condition with initial V
how long does it take to stop

Homework Equations


a=V*dv/dt


The Attempt at a Solution


there are linear and non-linear parts in this drag
I tried to solve them separately but I can only find v'=e^-(V_0*x*L)
 
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welcome to pf!

hi seanwfd! welcome to pf! :smile:

(have a a mu: µ and try using the X2 and X2 icons just above the Reply box :wink:)

that doesn't look right … what happened to the µ ? :redface:

show us your full calculations, and then we'll see what went wrong, and we'll know how to help! :smile:
 
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