(a)[3]
Find the velocity of the particle at the instant when its acceleration is zero.
(b)[6]
Find the distance along $PQ$.
Mathematics 9709 · AS & A Level · Kinematics of motion in a straight line
Kinematics of motion in a straight line — practice question
A particle moves along the straight line $PQ$. Its velocity $t$ s after leaving $P$ is $v$ m s$^{-1}$, where $v = 4.5 + 4t - 0.5t^2$. The particle is instantaneously at rest at $Q$.