A car of mass accelerates uniformly from rest to a speed of in

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A car of mass

800\,\text{kg}

accelerates uniformly from rest to a speed of

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

10\,\text{s}

. Assuming all the engine’s work appears as kinetic energy, find the average power developed by the engine. (a)

32\,\text{kW}

(b)

16\,\text{kW}

(c)

8\,\text{kW}

(d)

160\,\text{kW}