A block slides on a horizontal table with a speed of

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

2.0\,\text{kg}

block slides on a horizontal table with a speed of

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

. A horizontal blow acts opposite to its motion and delivers an impulse of

-6.0\,\text{N s}

to the block in a very short time. The coefficient of kinetic friction between the block and the table is

0.40

. After the blow ends, how far will the block move before coming to rest? (Take

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

.) (a)

4.0\,\text{m}

(b)

6.3\,\text{m}

(c)

3.1\,\text{m}

(d)

2.5\,\text{m}