A 750 N Box Moves at a Constant Velocity on a Floor

Multiple Choice

A 750 N box moves at a constant velocity on a floor with a coefficient of static friction μ_s = 0.800 and coefficient of kinetic friction μ_k = 0.600. What horizontal force is required to keep the box moving?

A) 600 N
B) 550 N
C) 500 N
D) 450 N
E) 750 N