(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I feel as though I am missing information but I have been assured I'm not can anyone help me out?

At an accident scene on a level road, investigators measure a car's skid mark to be d=88m long. The accident occurred on a rainy day, and the coefficient of friction was estimated to be Mu=0.34. Use this data to determine the speed of the car, v when the driver slammed on (and locked) the breaks. Take g=10m/s^2.

2. Relevant equations

What is the speed of the car?

F=ma Ft=m(delta)v

3. The attempt at a solution

E1=E2+|W*Ffr|

mv^2/2=mv^2/2+|W*Ffr|

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Work and Energy with 2 variables

**Physics Forums | Science Articles, Homework Help, Discussion**