Physics help? Need Urgent!

Posted on 2016-05-10 19:10:00 in Physics by FORD

1.A 60.0 kg girl stands up on a stationary floating raft and decides to go into shore. She dives off the 180 kg floating raft with a velocity of 4.0 m/s [W]. Ignore the substantial friction real objects in water experience. 

a)What is the momentum of the girl as she is diving? 
b)What is the momentum of raft as the girl is diving? 
c)What is the final speed of the raft just after the girl dives?

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