Physics (AS & A Level) · May / June 2026 · Paper 14 · Question 11

The diagram shows two particles in motion. Particle X has mass 4M and is travelling with velocity v. Particle Y has mass M and is travelling with velocity 3v. The paths of the particles are perpendicular. The two particles collide and stick together to form a combined particle. No external forces act on the particles. What is the magnitude of the momentum of the combined particle after the collision?

1. AMv
2. B4Mv
3. C5Mv
4. D7Mv

As printed in the paper