Physics (AS & A Level) · May / June 2018 · Paper 13 · Question 9

A ball of mass 0.20 kg, travelling in the x-direction at a speed of 0.50 m s⁻¹, collides with a ball of mass 0.30 kg travelling in the y-direction at a speed of 0.40 m s⁻¹. The two balls stick together after the collision, travelling at an angle θ to the x-direction. What is the value of θ?

1. A39°
2. B40°
3. C50°
4. D51°

As printed in the paper