Physics (AS & A Level) · Oct / Nov 2024 · Paper 12 · Question 10

Two train carriages each of mass 5000 kg roll toward one another on a horizontal frictionless track. One is travelling at a speed of 2.00 m s–1 and the other at a speed of 1.00 m s–1, as shown. They collide and join together. What is the kinetic energy lost during the collision?

1. A1250 J
2. B7500 J
3. C11 250 J
4. D12 500 J

As printed in the paper