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Find the distance $P$ covers between the times when it is at instantaneous rest.
Mathematics 9709 · AS & A Level · Kinematics of motion in a straight line
Kinematics of motion in a straight line — practice question
A particle $P$ travels along a straight line and passes through point $O$ with velocity $4.2\,\text{m s}^{-1}$. For time $t\,\text{s}$ after $P$ passes $O$, its acceleration $a\,\text{m s}^{-2}$ is $a = 0.6t - 2.7$.