Physics

Problem

A car of mass

800\,\text{kg}

travels on a level road at

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

. The engine provides a constant forward thrust of

4000\,\text{N}

while resistive forces total

2000\,\text{N}

opposite to the motion. Calculate the distance the car covers before its speed increases to

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