Physics (AS & A Level) · Oct / Nov 2023 · Paper 12 · Question 10

Two balls, of masses m and 2m, travelling in a vacuum with initial velocities 2v and v respectively, collide with each other head-on, as shown. After the collision, the ball of mass m rebounds to the left with velocity v. What is the loss of kinetic energy in the collision?

1. A\frac{3}{4}mv^2
2. B\frac{3}{2}mv^2
3. C\frac{9}{4}mv^2
4. D\frac{9}{2}mv^2

As printed in the paper