A vacationer of mass 85kg is standing on a stationary raft of mass 65kg. The vacationer then walks toward one end of the raft at a speed of 3.2m/s relative to the water. What are the magnitude and direction of the resulting velocity of the raft relative to the water? Neglect fluid friction between the raft and the water

A vacationer of mass 85kg is standing on a stationary raft of mass 65kg. The vacationer then walks toward one end of the raft at a speed of 3.2m/s relative to the water. What are the magnitude and direction of the resulting velocity of the raft relative to the water? Neglect fluid friction between the raft and the water