A block of mass starts from rest at the top of a rough incline that makes an angle of…

PHYSICS · Subjective · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power

Problem

A block of mass

2\,\text{kg}

starts from rest at the top of a rough incline that makes an angle of

30^{\circ}

with the horizontal. The length of the incline is

5\,\text{m}

and the coefficient of kinetic friction between the block and the surface is

0.20

. Determine the speed of the block when it reaches the bottom of the incline. (Take

g=9.8\,\text{m}\,\text{s}^{-2}