Francine McFly is a 50kg circus acrobat. She does a famous stunt where she stands 2m from the middle of a seesaw while two of her friends jump 2m from the middle of the other side of the seesaw. A third stomps the seesaw. The two jumpers each weigh 80Kg and reach a max height of 1m. The stomper stomps with an energy equivalent to ¼ of one of the jumpers. Francine then does a backflip onto the shoulders of 3 of her friends. a) Francine′s Velocity when she is shot off and b) How HIGH Francine gets.
