A Horizontal 52-N Force Is Needed to Slide A $50 - \mathrm { kg }$

Multiple Choice

A horizontal 52-N force is needed to slide a $50 - \mathrm { kg }$ box across a flat surface at a constant velocity of 3.5 m/s. What is the coefficient of kinetic friction between the box and the floor?

A) 0.11
B) 0.09
C) 0.10
D) 0.13