Physics

Problem

A particle of mass

2\,\text{kg}

, initially at rest, is subjected to a force that varies with time as

F = 6t^{2}\,\text{N}

for

0 \le t \le 2\,\text{s}

, after which the force becomes zero. What is the speed of the particle at

t = 2\,\text{s}

? a)

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

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

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

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