Edexcel A-Level Physics AS 1.3.14 Conservation of Linear Momentum Questions

Practise Edexcel IAL Physics 1.1.14 by conserving momentum in collisions and recoil, calculating velocities and resolving components.

Exam points

state that total momentum before equals total momentum after when no external force acts
calculate post-collision or recoil velocities using p=mv and momentum conservation
resolve momentum components to test conservation in two-dimensional collision data

[Maximum number: 2]

P and Q are identical spheres. Sphere P moves along a smooth horizontal surface and collides with sphere Q, which is initially stationary.

After the collision:
- sphere P moves off with a momentum of $0.096 \mathrm{~kg} \mathrm{~m} \mathrm{~s}^{-1}$ in a direction of $15^{\circ}$ to its initial direction.
- sphere Q moves off with a momentum of $0.14 \mathrm{~kg} \mathrm{~m} \mathrm{~s}^{-1}$ in a direction of $10^{\circ}$ as shown.

Figure for Question Edexcel A-Level Physics AS 1.3.14 Conservation of Linear Momentum Questions question 1 — Edexcel A-Level Physics AS

State the principle of conservation of linear momentum.

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Edexcel A-Level Physics AS 1.3.14 Conservation of Linear Momentum Questions question 1