Physics (AS & A Level) · Oct / Nov 2016 · Paper 12 · Question 11

Two frictionless trolleys are moving towards each other along the same horizontal straight line. Their masses and velocities are shown. The trolleys collide and stick together. What is the velocity of the trolleys after the collision?

1. A2.0 m s–1 to the left
2. B2.0 m s–1 to the right
3. C2.8 m s–1 to the left
4. D2.8 m s–1 to the right

As printed in the paper