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 projected straight upwards from horizontal ground with initial speed $15\,\text{m s}^{-1}$.
(a)[2]
Find the speed of $P$ when it is $10\,\text{m}$ above the ground.
(b)[3]
At the same time as $P$ is projected, a second particle $Q$ is released from rest from a point $18\,\text{m}$ above the ground on the same vertical line as $P$. Determine the height above the ground at which the two particles collide.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Constant acceleration method, for example $v^2=u^2+2as$ with $a=\pm g$.” …