- #1
Syndrix
- 4
- 0
Homework Statement
The coefficient of kinetic friction between rubber tires and wet pavement is 0.50. The brakes are applied to a 750kg car traveling 30.0 m/s and the car skids to a stop. What would be the magnitude and direction of the acceleration on the car?
u = 0.50
m = 750kg
V(i) = 30m/s
Homework Equations
F(f) = uF(n)
F(n) = mg
F(net) = ma
The Attempt at a Solution
pNo matter what way I look at this I cannot find a way to calculate acceleration with this set of data. I realize I need F(a) but I can't seem to get it.
I know F(f) = umg, and solved: F(f) = (0.5)(750)(9.81) and got F(f) = 3678.75 N
F(net) = ma => F(f) + F(a) = ma
This is as far as I get because I have two unknowns, F(a) and a