Physics

Problem

0.5\,\text{kg}

particle moves along a straight track. At

x=0

m its speed is

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

. The force acting on it varies with position as follows: (i)

0\le x\le 2

F=4x

N, (ii)

2<x\le3

F=8

N (constant). Find the speed of the particle at

x=3