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3(b)4 marks

An object of mass 2m is travelling at a speed of 5.0 m s⁻¹ in a straight line. It collides with an object of mass 3m which is initially stationary, as shown in Fig. 3.1.

After the collision, the object of mass 2m moves with velocity v at an angle of 30° to its original direction of motion. The object of mass 3m moves with velocity w also at an angle of 30°, as shown in Fig. 3.2.

By considering the conservation of momentum in two dimensions, calculate the magnitudes of v and w.

9702/21/M/J/24Cambridge International AS & A Level Physics 9702 · May/June 2024 · Paper 2 variant 1 · Question 3(b)

Fig. 3.1 — see the question text for what it shows
Fig. 3.2 — see the question text for what it shows

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Suggested time: 6 min