Physics

Problem

An object starts from rest and its velocity–time data are as follows: it accelerates uniformly to

9\,\text{m/s}

in the first

3\,\text{s}

, then slows down uniformly to

3\,\text{m/s}

in the next

3\,\text{s}

, and finally moves with this constant velocity for another

2\,\text{s}

. Calculate the total displacement during the

8\,\text{s}

of motion. a)

31.5\,\text{m}

42\,\text{m}

37.5\,\text{m}

46.5\,\text{m}