Physics

Problem

A car is moving at

12\,\text{m/s}

. It accelerates uniformly at

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

for some time and then continues at the new constant speed for

5\,\text{s}

. The total distance covered during the entire motion is

192\,\text{m}

. For how long did the car accelerate? a)

6\,\text{s}

8\,\text{s}

4\,\text{s}

3\,\text{s}