Mathematics

Problem

A particle moves along a straight line such that its position is

x(t)=10t-t^{3}

(in metres). Determine the magnitude of its acceleration when the particle momentarily comes to rest. a)

6\,\text{m s}^{-2}

11\,\text{m s}^{-2}

3.7\,\text{m s}^{-2}

19\,\text{m s}^{-2}