A block slides on a rough horizontal floor with an initial speed of

PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

4\,\text{kg}

block slides on a rough horizontal floor with an initial speed of

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

. The coefficient of kinetic friction between the block and the floor is

0.20

. What is the speed of the block after it has travelled

5\,\text{m}

? (Take

g=10\,\text{m\,s}^{-2}

.) (a)

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

(b)

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

(c)

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

(d)

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