- #1
Mike12345
- 3
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So I am stuck on another question I've been looking at
Ina brake test on dry concrete a Porsche Boxter traveling with an initial speed of 33.2 m/s can stop w/o skidding after moving 62.8 m . The mass of the Boxter including driver is 1340kg.
Determine the magnitude of the average accelertaion of the car during the non skidding braking
a = 87.76 m/s^2 <- i got this which i believe is correct
b) Cacluate the magnitude of the average stopping friction force
Ff ? Stuck here
c) Assume the test is now done with skidding on dry concrete. Calculate the stopping distance during the skid
Fk = 10,505,6 N
A = Fk/m = 7.84 m/s^2
Im stuck here too =S
Ina brake test on dry concrete a Porsche Boxter traveling with an initial speed of 33.2 m/s can stop w/o skidding after moving 62.8 m . The mass of the Boxter including driver is 1340kg.
Determine the magnitude of the average accelertaion of the car during the non skidding braking
a = 87.76 m/s^2 <- i got this which i believe is correct
b) Cacluate the magnitude of the average stopping friction force
Ff ? Stuck here
c) Assume the test is now done with skidding on dry concrete. Calculate the stopping distance during the skid
Fk = 10,505,6 N
A = Fk/m = 7.84 m/s^2
Im stuck here too =S