The engine of a motorboat delivers of power to overcome a total resistive force of…

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

The engine of a motorboat delivers

12\,\text{kW}

of power to overcome a total resistive force of

4.0\,\text{kN}

while the boat moves at constant speed. Determine the speed of the boat in (i)

\text{m\,s}^{-1}

and (ii)

\text{km\,h}^{-1}