Question

A motor boat moves at a steady speed of 8 m/s . If the water resistance to the motion of the boat is 2kN. Calculate the power of the engine?

Answer 1

 Dear student;
AS U KNOW THAT 2KN =2000N 

  power is the rate of doing work  =dw/dt
                                          = dFx/dt                    (work = Fx)
                                            = Fv
power of engine = 2000*8
                         = 16000w
                         = 16kw