Physics

Problem

For the first

4\,\text{s}

a toy car moves with a constant velocity of

6\,\text{m/s}

. It then decelerates uniformly to rest in the next

3\,\text{s}

. Calculate the displacement covered in the whole

7\,\text{s}

. a)

24\,\text{m}

42\,\text{m}

33\,\text{m}

21\,\text{m}