Physics (AS & A Level) · Oct / Nov 2025 · Paper 13 · Question 18

A bungee jumper jumps from a platform and is decelerated by an elastic bungee cord, as shown. When the jumper makes the jump, his initial gravitational potential energy relative to the ground is converted into his kinetic energy and into elastic potential energy in the cord. At which part of the jump are all three types of energy non-zero?

1. Aon the platform before the jump
2. Bon the way down before the cord has started to extend
3. Con the way down as he decelerates
4. Dat the bottom of the jump when he is stationary

As printed in the paper