A vehicle moves safe on a rough, curved and unbanked road. Then
a) The direction of static friction is radially out wards
b) The direction of static friction is radially inwards
c) The direction of kinetic friction is tangential to curved path
d) Static friction does not exist

• A

  a and b are correct

• B

  c and d are correct

• C

  b and c are correct

• D

  a and c are correct