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astru025
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Ap physics friction force please help!
A 1000kg car traveling at a speed of 40m/s skids to a halt on wet concrete where the friction force is 6000N. How far does the car slide before coming to a stop?
F=mv^2 / r
1000 kg x (40 m/s^2) / r = 6000 N
I got 266.7
I came up with a positive number and it should be a negative number... What am I doing wrong?!
Homework Statement
A 1000kg car traveling at a speed of 40m/s skids to a halt on wet concrete where the friction force is 6000N. How far does the car slide before coming to a stop?
Homework Equations
F=mv^2 / r
1000 kg x (40 m/s^2) / r = 6000 N
I got 266.7
The Attempt at a Solution
I came up with a positive number and it should be a negative number... What am I doing wrong?!