True or false: static friction is always greater than kinetic friction.
Select one:
a. False, because the strength of static friction depends on the strength of the other forces on the object
b. True, because we always have μ_s>μ_k
c. False, because whether we have μ_s>μ_k depends on the nature of the two materials in contact with each other
d. True, because it is easier to pull an object once it starts moving