A motorcycle of mass starts from rest on a level road

PHYSICS · Multi-part · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

A motorcycle of mass

180\,\text{kg}

starts from rest on a level road. The engine can maintain a constant mechanical power output of

9.0\,\text{kW}

. Neglect all frictional and air-resistance forces. (i) Calculate the time required for the motorcycle to attain a speed of

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

. (ii) Determine the kinetic energy gained by the motorcycle in the time found in part (i).