
#1
Aug806, 11:55 PM

P: 38

A car travelling at an initial velocity [tex]v_{0}[/tex] applies its brakes to come to a stop. The coeffictien of friction is [tex]\mu[/tex]. What distance is required to stop?
I know that you can solve for x using this equation: [tex]v^2=v_{0}^2+2ax[/tex] but i don't know how to solve for acceleration a. any help? 



#2
Aug806, 11:58 PM

Mentor
P: 4,499

Can you calculate the frictional force? If so, can you calculate the acceleration, by, say, using the definition of force? Try it out, assigning the mass to be m_{0}, and see what you get




#3
Aug906, 12:10 AM

P: 38

Im trying to do a force balace to find a but im not sure this is right.
[tex]\mum_{0}g=m_{0}a[/tex] solving for for a, i get [tex]a=\mug[/tex] 



#4
Aug906, 12:13 AM

P: 38

friction problem
excuse my bad Latex
but it should be: u*Mo*g=Mo*a, solving for a, a=u*g 



#6
Aug906, 02:28 PM

P: 38

thanx 'preciate the help



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