Remember the equation F=ma?
You're given the acceleration and the mass, so you can find the force acting on the system. Draw a free body diagram, what forces are being applied to the car? Break down your total force into these force components to find the frictional force.
The average rate of acceleration for a breaking car was -12.2m/s2. If the car had a mass of 925 kg, find the frictional force and direction.
a = -12.2m/s2
m = 925 kg
Fn = 9074.25 N
This is what I've figured out. I don't know how to find the coefficient of friction. If I get the coefficient I think I can multiply it by the normal force to get the frictional force.
2 answers
once I find the force acting on the car the frictional force would just be the negetive of that?
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