Physics

Problem

A car starts from rest and moves in a straight line with a uniform acceleration of

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

for

4\,\text{s}

. What is its speed at the end of

4\,\text{s}

? a)

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

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

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

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