physics
posted by Bruce .
An 88kg fisherman jumps from a dock into a 131kg rowboat at rest on the west side of the dock. If the velocity of the fisherman is 4.7m/s to the west as he leaves the dock, what is the final velocity of the fisherman and the boat. East is positive.

physics 
drwls
Apply conservation of momentum. If east is positive, the final momentum and velocity will be negative.
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