A box rests on a level floor

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics

Problem

10\,\text{kg}

box rests on a level floor. The coefficients of friction between the box and the floor are

\mu_s = 0.30

and

\mu_k = 0.20

. A horizontal force of

25\,\text{N}

is applied to the box. What is the magnitude of the friction force acting on the box? (a)

29\,\text{N}

(b)

25\,\text{N}

(c)

20\,\text{N}

(d)

4.4\,\text{N}