(a)[3]
Find the greatest height above the ground reached by $P$.
(b)[4]
Find the time for which $P$ is at a height of more than $3.6\,\text{m}$ above the ground.
Mathematics 9709 · AS & A Level · Kinematics of motion in a straight line
Kinematics of motion in a straight line — practice question
A particle $P$ is launched vertically upwards at a speed of $5\,\text{m s}^{-1}$ from a point $A$, which lies $2.8\,\text{m}$ above the horizontal ground.