A ship suffers a resistive force of  800000 N , knowing that the mass of water ejected is 600000 Kg/s and that the ship is at a  constant speed show that the water must be ejected by a speed of 13 m/s  
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    It's very simple. 
Here,F=800000N,Me=600000kg/s,Ve=?
We know,F=Ve*Me or,Ve=F/Me=(800000/600000)m/s=1.3333m/s.
I think you made a mistake.Regarding your information this answer's right.If the F=8000000N,you could show that Ve=13m/s.
I hope it helped...
      Here,F=800000N,Me=600000kg/s,Ve=?
We know,F=Ve*Me or,Ve=F/Me=(800000/600000)m/s=1.3333m/s.
I think you made a mistake.Regarding your information this answer's right.If the F=8000000N,you could show that Ve=13m/s.
I hope it helped...
