Physics (AS & A Level) · May / June 2026 · Paper 12 · Question 6

A small glider moves along a horizontal air track as shown. At each end of the air track, the glider has a perfectly elastic collision with a fixed buffer. The glider moves at a constant speed between collisions. Which graph represents the variation with time t of the velocity v of the glider as it moves between the two buffers?

1. AGraph A
2. BGraph B
3. CGraph C
4. DGraph D

As printed in the paper