Question #6417391Single Choice

Physics

Question

A box with a weight of 200 N is resting on a horizontal floor. A horizontal force of at least 45 N is required to start moving the box from rest. Once the box is in motion, a horizontal force of 40 N is sufficient to keep it moving at a constant speed. What is the the coefficient of kinetic friction between the box and the floor?

Options

A
    0.15
B
    0.20
C
    0.25
D
    0.30

Answer & Analysis