Recap - Stunt Ramp

A stunt rider and her motorbike, $100\ \mathrm{kg}$ together, roll from rest down a curved ramp with the engine off, and must leave its edge at $15\ \mathrm{m/s}$ to reach the landing platform. Friction and air take $1000\ \mathrm{J}$ of energy on the way down; on the last flat stretch before the edge they push back on the rider with $200\ \mathrm{N}$ together. The picture shows the rider twice: at the start and on that flat stretch. Draw the forces on the rider on the flat stretch, then find the height $h$ of the start above the edge.