Anette Force 52kg is sitting on a 3.0 kg raft in the swimming pool. Her friend, Gus Tawind, throws her a 5.1 giant submarine at a speed of 8.3m/s. Anette may be small, but she is a good eater, so she catches the sandwich perfectly.

a. Explain if the collision between Annette and the sub sandwich is the elastic or inelastic.

b. what is annette's final speed?