A wooden block is pulled along a horizontal rough surface with a constant speed of by…

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

Problem

10\,\text{kg}

wooden block is pulled along a horizontal rough surface with a constant speed of

4\,\text{m s}^{-1}

by a force

P

acting parallel to the surface. The coefficient of kinetic friction between the block and the surface is

0.30

. An additional

6\,\text{N}

air resistance acts opposite to the motion. Calculate the magnitude of

P

. (a)

29.4\,\text{N}

(b)

41.4\,\text{N}

(c)

35.4\,\text{N}

(d)

36.0\,\text{N}