(main)[3]
Determine the two possible speeds of $Q$ immediately after the collision.
Mathematics 9709 · AS & A Level · Momentum
Momentum — practice question
Particles $P$ and $Q$, with masses $0.2\,\mathrm{kg}$ and $0.5\,\mathrm{kg}$, are initially stationary on a smooth horizontal plane. $P$ is then sent towards $Q$ at a speed of $6\,\mathrm{m\,s^{-1}}$. Once $P$ and $Q$ have collided, the speed of $P$ is $1\,\mathrm{m\,s^{-1}}$.
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Momentum conservation applied, for example $0.2\times6+0=0.2\times1+0.5v$ (or an equivalent equation with reversed sign convention)” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI