A car starts from rest on a level road

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

1000\,\text{kg}

car starts from rest on a level road. Its engine delivers a constant power of

50\,\text{kW}

. Neglecting all losses, calculate the speed of the car after

20\,\text{s}

. (a)

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

(b)

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

(c)

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

(d)

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