A Worker Pulls a 350-N Packing Crate at Constant Velocity

Multiple Choice

A worker pulls a 350-N packing crate at constant velocity across a rough floor by exerting a force F = 200.0 N at an angle of 30.0° above the horizontal.What is the coefficient of kinetic friction of the floor?

A) 0.793
B) 0.693
C) ​0.593
D) ​1.386
E) ​0.400