Physics

Problem

2.0\,\text{kg}

block is released from rest at the top of a

5.0\,\text{m}

long incline that makes an angle of

30^{\circ}

with the horizontal. The coefficient of kinetic friction between the block and the surface is

0.20

. What is the speed of the block at the bottom of the incline? a)

6.3\,\text{m/s}

5.7\,\text{m/s}

7.0\,\text{m/s}

9.9\,\text{m/s}