(i)[2]
Determine the time for $P$ to attain its maximum height.
(ii)[3]
Determine how long $P$ stays above $23\,\text{m}$ from the ground.
(iii)[2]
The particle is above $h\,\text{m}$ from the ground for $1$ second. Determine $h$.
Mathematics 9709 · AS & A Level · Kinematics of motion in a straight line
Kinematics of motion in a straight line — practice question
Particle $P$ is fired vertically upwards from a point $3\,\text{m}$ above level ground, with initial speed $25\,\text{m s}^{-1}$.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Apply $v=u+at$ with $u=25$, $v=0$ and $a=-g$, so that $0=25-10t$” …
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