Physics

Problem

A car starts from rest, accelerates uniformly at

2\,\text{m}\,\text{s}^{-2}

for

10\,\text{s}

and then moves with the speed attained for another

20\,\text{s}

. The total displacement of the car in this

30\,\text{s}

interval is a)

600\,\text{m}

900\,\text{m}

500\,\text{m}

400\,\text{m}