(a)[1]
State the momentum of $P$.
(b)[2]
Following the collision, $P$ still moves in the same direction at speed $0.3\,\text{m s}^{-1}$. Find the speed of $Q$ after the collision.
Mathematics 9709 · AS & A Level · Momentum
Momentum — practice question
Particles $P$ and $Q$, with masses $0.2\,\text{kg}$ and $0.5\,\text{kg}$ respectively, are initially at rest on a smooth horizontal plane. $P$ is launched towards $Q$ at speed $2\,\text{m s}^{-1}$.