If the longitude coefficient of friction is 0.4, then the resultant retardation in m/sec2 as per IRC will be

If the longitude coefficient of friction is 0.4, then the resultant re

1.	If the longitude coefficient of friction is 0.4, then the resultant retardation in m/sec² as per IRC will be
A.	3.93
B.	4.00
C.	4.01
D.	4.02
Answer» B. 4.00