Physics (AS & A Level) · May / June 2016 · Paper 13 · Question 10

Two equal masses travel towards each other on a frictionless track at speeds of 60 cm s–1 and 30 cm s–1. They stick together on impact. What is the speed of the masses after impact?

1. A15 cm s–1
2. B20 cm s–1
3. C30 cm s–1
4. D45 cm s–1

As printed in the paper