Physics word problem!?

Question

A car that's 2460.0-kg is driving at a constant speed of 11.0 m/s along an icy, but straight and level road. While approaching a traffic light, it turns red. Slam on the brakes, wheels lock, tires begin skidding, and the car slides to a halt in a distance of 25.0 m. What is the coefficient of sliding friction (µ) between your tires and the icy roadbed?

Answer 1

let's look at energies to compute the µ
the starting kinetic is
.5*m*11^2
the loss due to friction is
m*9.81*µ*25

solve for µ
µ=0.247

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