Physics

Problem

A particle of mass

2\,\text{kg}

moves in a straight line such that its speed at time

t

seconds is

v = 3 t^{2}\,\text{m s}^{-1}

. What is the magnitude of the force acting on the particle at

t = 2\,\text{s}

? a)

48\,\text{N}

24\,\text{N}

12\,\text{N}

36\,\text{N}