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gdhillon
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A stationary lift raft of mass 160 kg is carrying two survivors with masses of 55 kg and
72 kg. They dive off the raft at the same instant, the 55kg person East at 4.4 m/s and the 72
kg person North at 4.2 m/s. AT what speed and in what direction does the raft start to move?
So i started off by finding the impluses of both the people. P(north)=mv=72(4.2)=302.4 then p(east)=4.4(55)=242 and then i said p(north) +p(east)=p(raft). so 302.4+2424=160v then solving for v 3.4m/s @15degrees S of W (my teacher said the direction is correct)
72 kg. They dive off the raft at the same instant, the 55kg person East at 4.4 m/s and the 72
kg person North at 4.2 m/s. AT what speed and in what direction does the raft start to move?
So i started off by finding the impluses of both the people. P(north)=mv=72(4.2)=302.4 then p(east)=4.4(55)=242 and then i said p(north) +p(east)=p(raft). so 302.4+2424=160v then solving for v 3.4m/s @15degrees S of W (my teacher said the direction is correct)
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